store popped context history in Display

2 files changed, 143 insertions, 89 deletions

diff --git a/ext/bg/js/templates.js b/ext/bg/js/templates.js
index 6e377957..1f551c3f 100644
--- a/ext/bg/js/templates.js
+++ b/ext/bg/js/templates.js
@@ -34,18 +34,19 @@ templates['kanji.html'] = template({"1":function(container,depth0,helpers,partia
   return "<div class=\"entry\" data-type=\"kanji\">\n    <div class=\"actions\">\n"
     + ((stack1 = helpers["if"].call(alias1,(depth0 != null ? depth0.addable : depth0),{"name":"if","hash":{},"fn":container.program(11, data, 0),"inverse":container.noop,"data":data})) != null ? stack1 : "")
     + ((stack1 = helpers["if"].call(alias1,(depth0 != null ? depth0.source : depth0),{"name":"if","hash":{},"fn":container.program(13, data, 0),"inverse":container.noop,"data":data})) != null ? stack1 : "")
+    + ((stack1 = helpers["if"].call(alias1,(depth0 != null ? depth0.history : depth0),{"name":"if","hash":{},"fn":container.program(15, data, 0),"inverse":container.noop,"data":data})) != null ? stack1 : "")
     + "        <img src=\"/mixed/img/entry-current.svg\" class=\"current\" title=\"Current entry (Alt + Up/Down/Home/End/PgUp/PgDn)\" alt>\n    </div>\n\n    <div class=\"glyph expression-scan-toggle\">"
     + container.escapeExpression(((helper = (helper = helpers.character || (depth0 != null ? depth0.character : depth0)) != null ? helper : helpers.helperMissing),(typeof helper === "function" ? helper.call(alias1,{"name":"character","hash":{},"data":data}) : helper)))
     + "</div>\n\n"
-    + ((stack1 = helpers["if"].call(alias1,(depth0 != null ? depth0.frequencies : depth0),{"name":"if","hash":{},"fn":container.program(15, data, 0),"inverse":container.noop,"data":data})) != null ? stack1 : "")
+    + ((stack1 = helpers["if"].call(alias1,(depth0 != null ? depth0.frequencies : depth0),{"name":"if","hash":{},"fn":container.program(17, data, 0),"inverse":container.noop,"data":data})) != null ? stack1 : "")
     + "\n"
-    + ((stack1 = helpers["if"].call(alias1,(depth0 != null ? depth0.tags : depth0),{"name":"if","hash":{},"fn":container.program(18, data, 0),"inverse":container.noop,"data":data})) != null ? stack1 : "")
+    + ((stack1 = helpers["if"].call(alias1,(depth0 != null ? depth0.tags : depth0),{"name":"if","hash":{},"fn":container.program(20, data, 0),"inverse":container.noop,"data":data})) != null ? stack1 : "")
     + "\n    <table class=\"table table-condensed glyph-data\">\n        <tr>\n            <th>Glossary</th>\n            <th>Readings</th>\n            <th>Statistics</th>\n        </tr>\n        <tr>\n            <td class=\"glossary\">\n"
-    + ((stack1 = helpers["if"].call(alias1,((stack1 = (depth0 != null ? depth0.glossary : depth0)) != null ? stack1["1"] : stack1),{"name":"if","hash":{},"fn":container.program(21, data, 0),"inverse":container.program(24, data, 0),"data":data})) != null ? stack1 : "")
+    + ((stack1 = helpers["if"].call(alias1,((stack1 = (depth0 != null ? depth0.glossary : depth0)) != null ? stack1["1"] : stack1),{"name":"if","hash":{},"fn":container.program(23, data, 0),"inverse":container.program(26, data, 0),"data":data})) != null ? stack1 : "")
     + "            </td>\n            <td class=\"reading\">\n                "
-    + ((stack1 = helpers["if"].call(alias1,(depth0 != null ? depth0.onyomi : depth0),{"name":"if","hash":{},"fn":container.program(26, data, 0),"inverse":container.noop,"data":data})) != null ? stack1 : "")
+    + ((stack1 = helpers["if"].call(alias1,(depth0 != null ? depth0.onyomi : depth0),{"name":"if","hash":{},"fn":container.program(28, data, 0),"inverse":container.noop,"data":data})) != null ? stack1 : "")
     + "\n                "
-    + ((stack1 = helpers["if"].call(alias1,(depth0 != null ? depth0.kunyomi : depth0),{"name":"if","hash":{},"fn":container.program(29, data, 0),"inverse":container.noop,"data":data})) != null ? stack1 : "")
+    + ((stack1 = helpers["if"].call(alias1,(depth0 != null ? depth0.kunyomi : depth0),{"name":"if","hash":{},"fn":container.program(31, data, 0),"inverse":container.noop,"data":data})) != null ? stack1 : "")
     + "\n            </td>\n            <td>"
     + ((stack1 = container.invokePartial(partials.table,depth0,{"name":"table","hash":{"data":((stack1 = (depth0 != null ? depth0.stats : depth0)) != null ? stack1.misc : stack1)},"data":data,"helpers":helpers,"partials":partials,"decorators":container.decorators})) != null ? stack1 : "")
     + "</td>\n        </tr>\n        <tr>\n            <th colspan=\"3\">Classifications</th>\n        </tr>\n        <tr>\n            <td colspan=\"3\">"
@@ -55,19 +56,21 @@ templates['kanji.html'] = template({"1":function(container,depth0,helpers,partia
     + "</td>\n        </tr>\n        <tr>\n            <th colspan=\"3\">Dictionary Indices</th>\n        </tr>\n        <tr>\n            <td colspan=\"3\">"
     + ((stack1 = container.invokePartial(partials.table,depth0,{"name":"table","hash":{"data":((stack1 = (depth0 != null ? depth0.stats : depth0)) != null ? stack1.index : stack1)},"data":data,"helpers":helpers,"partials":partials,"decorators":container.decorators})) != null ? stack1 : "")
     + "</td>\n        </tr>\n    </table>\n\n"
-    + ((stack1 = helpers["if"].call(alias1,(depth0 != null ? depth0.debug : depth0),{"name":"if","hash":{},"fn":container.program(31, data, 0),"inverse":container.noop,"data":data})) != null ? stack1 : "")
+    + ((stack1 = helpers["if"].call(alias1,(depth0 != null ? depth0.debug : depth0),{"name":"if","hash":{},"fn":container.program(33, data, 0),"inverse":container.noop,"data":data})) != null ? stack1 : "")
     + "</div>\n";
 },"11":function(container,depth0,helpers,partials,data) {
     return "        <a href=\"#\" class=\"action-view-note pending disabled\"><img src=\"/mixed/img/view-note.svg\" title=\"View added note (Alt + V)\" alt></a>\n        <a href=\"#\" class=\"action-add-note pending disabled\" data-mode=\"kanji\"><img src=\"/mixed/img/add-term-kanji.svg\" title=\"Add Kanji (Alt + K)\" alt></a>\n";
 },"13":function(container,depth0,helpers,partials,data) {
     return "        <a href=\"#\" class=\"source-term\"><img src=\"/mixed/img/source-term.svg\" title=\"Source term (Alt + B)\" alt></a>\n";
 },"15":function(container,depth0,helpers,partials,data) {
+    return "        <a href=\"#\" class=\"history-term\"><img src=\"/mixed/img/source-term.svg\" style=\"transform: scaleX(-1);\" title=\"History term (Alt + F)\" alt></a>\n";
+},"17":function(container,depth0,helpers,partials,data) {
     var stack1;
 
   return "    <div>\n"
-    + ((stack1 = helpers.each.call(depth0 != null ? depth0 : (container.nullContext || {}),(depth0 != null ? depth0.frequencies : depth0),{"name":"each","hash":{},"fn":container.program(16, data, 0),"inverse":container.noop,"data":data})) != null ? stack1 : "")
+    + ((stack1 = helpers.each.call(depth0 != null ? depth0 : (container.nullContext || {}),(depth0 != null ? depth0.frequencies : depth0),{"name":"each","hash":{},"fn":container.program(18, data, 0),"inverse":container.noop,"data":data})) != null ? stack1 : "")
     + "    </div>\n";
-},"16":function(container,depth0,helpers,partials,data) {
+},"18":function(container,depth0,helpers,partials,data) {
     var helper, alias1=depth0 != null ? depth0 : (container.nullContext || {}), alias2=helpers.helperMissing, alias3="function", alias4=container.escapeExpression;
 
   return "        <span class=\"label label-default tag-frequency\">"
@@ -75,13 +78,13 @@ templates['kanji.html'] = template({"1":function(container,depth0,helpers,partia
     + ":"
     + alias4(((helper = (helper = helpers.frequency || (depth0 != null ? depth0.frequency : depth0)) != null ? helper : alias2),(typeof helper === alias3 ? helper.call(alias1,{"name":"frequency","hash":{},"data":data}) : helper)))
     + "</span>\n";
-},"18":function(container,depth0,helpers,partials,data) {
+},"20":function(container,depth0,helpers,partials,data) {
     var stack1;
 
   return "    <div>\n"
-    + ((stack1 = helpers.each.call(depth0 != null ? depth0 : (container.nullContext || {}),(depth0 != null ? depth0.tags : depth0),{"name":"each","hash":{},"fn":container.program(19, data, 0),"inverse":container.noop,"data":data})) != null ? stack1 : "")
+    + ((stack1 = helpers.each.call(depth0 != null ? depth0 : (container.nullContext || {}),(depth0 != null ? depth0.tags : depth0),{"name":"each","hash":{},"fn":container.program(21, data, 0),"inverse":container.noop,"data":data})) != null ? stack1 : "")
     + "    </div>\n";
-},"19":function(container,depth0,helpers,partials,data) {
+},"21":function(container,depth0,helpers,partials,data) {
     var helper, alias1=depth0 != null ? depth0 : (container.nullContext || {}), alias2=helpers.helperMissing, alias3="function", alias4=container.escapeExpression;
 
   return "        <span class=\"label label-default tag-"
@@ -91,68 +94,68 @@ templates['kanji.html'] = template({"1":function(container,depth0,helpers,partia
     + "\">"
     + alias4(((helper = (helper = helpers.name || (depth0 != null ? depth0.name : depth0)) != null ? helper : alias2),(typeof helper === alias3 ? helper.call(alias1,{"name":"name","hash":{},"data":data}) : helper)))
     + "</span>\n";
-},"21":function(container,depth0,helpers,partials,data) {
+},"23":function(container,depth0,helpers,partials,data) {
     var stack1;
 
   return "                <ol>"
-    + ((stack1 = helpers.each.call(depth0 != null ? depth0 : (container.nullContext || {}),(depth0 != null ? depth0.glossary : depth0),{"name":"each","hash":{},"fn":container.program(22, data, 0),"inverse":container.noop,"data":data})) != null ? stack1 : "")
+    + ((stack1 = helpers.each.call(depth0 != null ? depth0 : (container.nullContext || {}),(depth0 != null ? depth0.glossary : depth0),{"name":"each","hash":{},"fn":container.program(24, data, 0),"inverse":container.noop,"data":data})) != null ? stack1 : "")
     + "</ol>\n";
-},"22":function(container,depth0,helpers,partials,data) {
+},"24":function(container,depth0,helpers,partials,data) {
     return "<li><span class=\"glossary-item\">"
     + container.escapeExpression(container.lambda(depth0, depth0))
     + "</span></li>";
-},"24":function(container,depth0,helpers,partials,data) {
+},"26":function(container,depth0,helpers,partials,data) {
     var stack1;
 
   return "                <span class=\"glossary-item\">"
     + container.escapeExpression(container.lambda(((stack1 = (depth0 != null ? depth0.glossary : depth0)) != null ? stack1["0"] : stack1), depth0))
     + "</span>\n";
-},"26":function(container,depth0,helpers,partials,data) {
+},"28":function(container,depth0,helpers,partials,data) {
     var stack1;
 
   return "<dl>"
-    + ((stack1 = helpers.each.call(depth0 != null ? depth0 : (container.nullContext || {}),(depth0 != null ? depth0.onyomi : depth0),{"name":"each","hash":{},"fn":container.program(27, data, 0),"inverse":container.noop,"data":data})) != null ? stack1 : "")
+    + ((stack1 = helpers.each.call(depth0 != null ? depth0 : (container.nullContext || {}),(depth0 != null ? depth0.onyomi : depth0),{"name":"each","hash":{},"fn":container.program(29, data, 0),"inverse":container.noop,"data":data})) != null ? stack1 : "")
     + "</dl>";
-},"27":function(container,depth0,helpers,partials,data) {
+},"29":function(container,depth0,helpers,partials,data) {
     return "<dd>"
     + container.escapeExpression(container.lambda(depth0, depth0))
     + "</dd>";
-},"29":function(container,depth0,helpers,partials,data) {
+},"31":function(container,depth0,helpers,partials,data) {
     var stack1;
 
   return "<dl>"
-    + ((stack1 = helpers.each.call(depth0 != null ? depth0 : (container.nullContext || {}),(depth0 != null ? depth0.kunyomi : depth0),{"name":"each","hash":{},"fn":container.program(27, data, 0),"inverse":container.noop,"data":data})) != null ? stack1 : "")
+    + ((stack1 = helpers.each.call(depth0 != null ? depth0 : (container.nullContext || {}),(depth0 != null ? depth0.kunyomi : depth0),{"name":"each","hash":{},"fn":container.program(29, data, 0),"inverse":container.noop,"data":data})) != null ? stack1 : "")
     + "</dl>";
-},"31":function(container,depth0,helpers,partials,data) {
+},"33":function(container,depth0,helpers,partials,data) {
     var stack1, helper, options, buffer = 
   "    <pre>";
-  stack1 = ((helper = (helper = helpers.dumpObject || (depth0 != null ? depth0.dumpObject : depth0)) != null ? helper : helpers.helperMissing),(options={"name":"dumpObject","hash":{},"fn":container.program(32, data, 0),"inverse":container.noop,"data":data}),(typeof helper === "function" ? helper.call(depth0 != null ? depth0 : (container.nullContext || {}),options) : helper));
+  stack1 = ((helper = (helper = helpers.dumpObject || (depth0 != null ? depth0.dumpObject : depth0)) != null ? helper : helpers.helperMissing),(options={"name":"dumpObject","hash":{},"fn":container.program(34, data, 0),"inverse":container.noop,"data":data}),(typeof helper === "function" ? helper.call(depth0 != null ? depth0 : (container.nullContext || {}),options) : helper));
   if (!helpers.dumpObject) { stack1 = helpers.blockHelperMissing.call(depth0,stack1,options)}
   if (stack1 != null) { buffer += stack1; }
   return buffer + "</pre>\n";
-},"32":function(container,depth0,helpers,partials,data) {
+},"34":function(container,depth0,helpers,partials,data) {
     var stack1;
 
   return ((stack1 = container.lambda(depth0, depth0)) != null ? stack1 : "");
-},"34":function(container,depth0,helpers,partials,data,blockParams,depths) {
+},"36":function(container,depth0,helpers,partials,data,blockParams,depths) {
     var stack1;
 
-  return ((stack1 = helpers.each.call(depth0 != null ? depth0 : (container.nullContext || {}),(depth0 != null ? depth0.definitions : depth0),{"name":"each","hash":{},"fn":container.program(35, data, 0, blockParams, depths),"inverse":container.noop,"data":data})) != null ? stack1 : "");
-},"35":function(container,depth0,helpers,partials,data,blockParams,depths) {
+  return ((stack1 = helpers.each.call(depth0 != null ? depth0 : (container.nullContext || {}),(depth0 != null ? depth0.definitions : depth0),{"name":"each","hash":{},"fn":container.program(37, data, 0, blockParams, depths),"inverse":container.noop,"data":data})) != null ? stack1 : "");
+},"37":function(container,depth0,helpers,partials,data,blockParams,depths) {
     var stack1;
 
-  return ((stack1 = helpers.unless.call(depth0 != null ? depth0 : (container.nullContext || {}),(data && data.first),{"name":"unless","hash":{},"fn":container.program(36, data, 0, blockParams, depths),"inverse":container.noop,"data":data})) != null ? stack1 : "")
+  return ((stack1 = helpers.unless.call(depth0 != null ? depth0 : (container.nullContext || {}),(data && data.first),{"name":"unless","hash":{},"fn":container.program(38, data, 0, blockParams, depths),"inverse":container.noop,"data":data})) != null ? stack1 : "")
     + "\n"
-    + ((stack1 = container.invokePartial(partials.kanji,depth0,{"name":"kanji","hash":{"root":(depths[1] != null ? depths[1].root : depths[1]),"source":(depths[1] != null ? depths[1].source : depths[1]),"addable":(depths[1] != null ? depths[1].addable : depths[1]),"debug":(depths[1] != null ? depths[1].debug : depths[1])},"data":data,"helpers":helpers,"partials":partials,"decorators":container.decorators})) != null ? stack1 : "");
-},"36":function(container,depth0,helpers,partials,data) {
-    return "<hr>";
+    + ((stack1 = container.invokePartial(partials.kanji,depth0,{"name":"kanji","hash":{"root":(depths[1] != null ? depths[1].root : depths[1]),"history":(depths[1] != null ? depths[1].history : depths[1]),"source":(depths[1] != null ? depths[1].source : depths[1]),"addable":(depths[1] != null ? depths[1].addable : depths[1]),"debug":(depths[1] != null ? depths[1].debug : depths[1])},"data":data,"helpers":helpers,"partials":partials,"decorators":container.decorators})) != null ? stack1 : "");
 },"38":function(container,depth0,helpers,partials,data) {
+    return "<hr>";
+},"40":function(container,depth0,helpers,partials,data) {
     return "<p class=\"note\">No results found</p>\n";
 },"compiler":[7,">= 4.0.0"],"main":function(container,depth0,helpers,partials,data,blockParams,depths) {
     var stack1;
 
   return "\n\n"
-    + ((stack1 = helpers["if"].call(depth0 != null ? depth0 : (container.nullContext || {}),(depth0 != null ? depth0.definitions : depth0),{"name":"if","hash":{},"fn":container.program(34, data, 0, blockParams, depths),"inverse":container.program(38, data, 0, blockParams, depths),"data":data})) != null ? stack1 : "");
+    + ((stack1 = helpers["if"].call(depth0 != null ? depth0 : (container.nullContext || {}),(depth0 != null ? depth0.definitions : depth0),{"name":"if","hash":{},"fn":container.program(36, data, 0, blockParams, depths),"inverse":container.program(40, data, 0, blockParams, depths),"data":data})) != null ? stack1 : "");
 },"main_d":  function(fn, props, container, depth0, data, blockParams, depths) {
 
   var decorators = container.decorators;
@@ -307,16 +310,17 @@ templates['terms.html'] = template({"1":function(container,depth0,helpers,partia
     + ((stack1 = helpers["if"].call(alias1,(depth0 != null ? depth0.addable : depth0),{"name":"if","hash":{},"fn":container.program(25, data, 0, blockParams, depths),"inverse":container.noop,"data":data})) != null ? stack1 : "")
     + ((stack1 = helpers.unless.call(alias1,(depth0 != null ? depth0.merged : depth0),{"name":"unless","hash":{},"fn":container.program(27, data, 0, blockParams, depths),"inverse":container.noop,"data":data})) != null ? stack1 : "")
     + ((stack1 = helpers["if"].call(alias1,(depth0 != null ? depth0.source : depth0),{"name":"if","hash":{},"fn":container.program(30, data, 0, blockParams, depths),"inverse":container.noop,"data":data})) != null ? stack1 : "")
+    + ((stack1 = helpers["if"].call(alias1,(depth0 != null ? depth0.history : depth0),{"name":"if","hash":{},"fn":container.program(32, data, 0, blockParams, depths),"inverse":container.noop,"data":data})) != null ? stack1 : "")
     + "        <img src=\"/mixed/img/entry-current.svg\" class=\"current\" title=\"Current entry (Alt + Up/Down/Home/End/PgUp/PgDn)\" alt>\n    </div>\n\n"
-    + ((stack1 = helpers["if"].call(alias1,(depth0 != null ? depth0.merged : depth0),{"name":"if","hash":{},"fn":container.program(32, data, 0, blockParams, depths),"inverse":container.program(47, data, 0, blockParams, depths),"data":data})) != null ? stack1 : "")
+    + ((stack1 = helpers["if"].call(alias1,(depth0 != null ? depth0.merged : depth0),{"name":"if","hash":{},"fn":container.program(34, data, 0, blockParams, depths),"inverse":container.program(49, data, 0, blockParams, depths),"data":data})) != null ? stack1 : "")
     + "\n"
-    + ((stack1 = helpers["if"].call(alias1,(depth0 != null ? depth0.reasons : depth0),{"name":"if","hash":{},"fn":container.program(50, data, 0, blockParams, depths),"inverse":container.noop,"data":data})) != null ? stack1 : "")
+    + ((stack1 = helpers["if"].call(alias1,(depth0 != null ? depth0.reasons : depth0),{"name":"if","hash":{},"fn":container.program(52, data, 0, blockParams, depths),"inverse":container.noop,"data":data})) != null ? stack1 : "")
     + "\n"
-    + ((stack1 = helpers["if"].call(alias1,(depth0 != null ? depth0.frequencies : depth0),{"name":"if","hash":{},"fn":container.program(54, data, 0, blockParams, depths),"inverse":container.noop,"data":data})) != null ? stack1 : "")
+    + ((stack1 = helpers["if"].call(alias1,(depth0 != null ? depth0.frequencies : depth0),{"name":"if","hash":{},"fn":container.program(56, data, 0, blockParams, depths),"inverse":container.noop,"data":data})) != null ? stack1 : "")
     + "\n    <div class=\"glossary\">\n"
-    + ((stack1 = helpers["if"].call(alias1,(depth0 != null ? depth0.grouped : depth0),{"name":"if","hash":{},"fn":container.program(57, data, 0, blockParams, depths),"inverse":container.program(63, data, 0, blockParams, depths),"data":data})) != null ? stack1 : "")
+    + ((stack1 = helpers["if"].call(alias1,(depth0 != null ? depth0.grouped : depth0),{"name":"if","hash":{},"fn":container.program(59, data, 0, blockParams, depths),"inverse":container.program(65, data, 0, blockParams, depths),"data":data})) != null ? stack1 : "")
     + "    </div>\n\n"
-    + ((stack1 = helpers["if"].call(alias1,(depth0 != null ? depth0.debug : depth0),{"name":"if","hash":{},"fn":container.program(66, data, 0, blockParams, depths),"inverse":container.noop,"data":data})) != null ? stack1 : "")
+    + ((stack1 = helpers["if"].call(alias1,(depth0 != null ? depth0.debug : depth0),{"name":"if","hash":{},"fn":container.program(68, data, 0, blockParams, depths),"inverse":container.noop,"data":data})) != null ? stack1 : "")
     + "</div>\n";
 },"25":function(container,depth0,helpers,partials,data) {
     return "        <a href=\"#\" class=\"action-view-note pending disabled\"><img src=\"/mixed/img/view-note.svg\" title=\"View added note (Alt + V)\" alt></a>\n        <a href=\"#\" class=\"action-add-note pending disabled\" data-mode=\"term-kanji\"><img src=\"/mixed/img/add-term-kanji.svg\" title=\"Add expression (Alt + E)\" alt></a>\n        <a href=\"#\" class=\"action-add-note pending disabled\" data-mode=\"term-kana\"><img src=\"/mixed/img/add-term-kana.svg\" title=\"Add reading (Alt + R)\" alt></a>\n";
@@ -328,45 +332,47 @@ templates['terms.html'] = template({"1":function(container,depth0,helpers,partia
     return "        <a href=\"#\" class=\"action-play-audio\"><img src=\"/mixed/img/play-audio.svg\" title=\"Play audio (Alt + P)\" alt></a>\n";
 },"30":function(container,depth0,helpers,partials,data) {
     return "        <a href=\"#\" class=\"source-term\"><img src=\"/mixed/img/source-term.svg\" title=\"Source term (Alt + B)\" alt></a>\n";
-},"32":function(container,depth0,helpers,partials,data,blockParams,depths) {
+},"32":function(container,depth0,helpers,partials,data) {
+    return "        <a href=\"#\" class=\"history-term\"><img src=\"/mixed/img/source-term.svg\" style=\"transform: scaleX(-1);\" title=\"History term (Alt + F)\" alt></a>\n";
+},"34":function(container,depth0,helpers,partials,data,blockParams,depths) {
     var stack1;
 
-  return ((stack1 = helpers.each.call(depth0 != null ? depth0 : (container.nullContext || {}),(depth0 != null ? depth0.expressions : depth0),{"name":"each","hash":{},"fn":container.program(33, data, 0, blockParams, depths),"inverse":container.noop,"data":data})) != null ? stack1 : "");
-},"33":function(container,depth0,helpers,partials,data,blockParams,depths) {
+  return ((stack1 = helpers.each.call(depth0 != null ? depth0 : (container.nullContext || {}),(depth0 != null ? depth0.expressions : depth0),{"name":"each","hash":{},"fn":container.program(35, data, 0, blockParams, depths),"inverse":container.noop,"data":data})) != null ? stack1 : "");
+},"35":function(container,depth0,helpers,partials,data,blockParams,depths) {
     var stack1, helper, options, alias1=depth0 != null ? depth0 : (container.nullContext || {}), alias2=helpers.helperMissing, alias3="function", buffer = 
   "<div class=\"expression expression-scan-toggle\"><span class=\"expression-"
     + container.escapeExpression(((helper = (helper = helpers.termFrequency || (depth0 != null ? depth0.termFrequency : depth0)) != null ? helper : alias2),(typeof helper === alias3 ? helper.call(alias1,{"name":"termFrequency","hash":{},"data":data}) : helper)))
     + "\">";
-  stack1 = ((helper = (helper = helpers.kanjiLinks || (depth0 != null ? depth0.kanjiLinks : depth0)) != null ? helper : alias2),(options={"name":"kanjiLinks","hash":{},"fn":container.program(34, data, 0, blockParams, depths),"inverse":container.noop,"data":data}),(typeof helper === alias3 ? helper.call(alias1,options) : helper));
+  stack1 = ((helper = (helper = helpers.kanjiLinks || (depth0 != null ? depth0.kanjiLinks : depth0)) != null ? helper : alias2),(options={"name":"kanjiLinks","hash":{},"fn":container.program(36, data, 0, blockParams, depths),"inverse":container.noop,"data":data}),(typeof helper === alias3 ? helper.call(alias1,options) : helper));
   if (!helpers.kanjiLinks) { stack1 = helpers.blockHelperMissing.call(depth0,stack1,options)}
   if (stack1 != null) { buffer += stack1; }
   return buffer + "</span><div class=\"peek-wrapper\">"
-    + ((stack1 = helpers["if"].call(alias1,(depths[1] != null ? depths[1].playback : depths[1]),{"name":"if","hash":{},"fn":container.program(37, data, 0, blockParams, depths),"inverse":container.noop,"data":data})) != null ? stack1 : "")
-    + ((stack1 = helpers["if"].call(alias1,(depth0 != null ? depth0.termTags : depth0),{"name":"if","hash":{},"fn":container.program(39, data, 0, blockParams, depths),"inverse":container.noop,"data":data})) != null ? stack1 : "")
-    + ((stack1 = helpers["if"].call(alias1,(depth0 != null ? depth0.frequencies : depth0),{"name":"if","hash":{},"fn":container.program(42, data, 0, blockParams, depths),"inverse":container.noop,"data":data})) != null ? stack1 : "")
+    + ((stack1 = helpers["if"].call(alias1,(depths[1] != null ? depths[1].playback : depths[1]),{"name":"if","hash":{},"fn":container.program(39, data, 0, blockParams, depths),"inverse":container.noop,"data":data})) != null ? stack1 : "")
+    + ((stack1 = helpers["if"].call(alias1,(depth0 != null ? depth0.termTags : depth0),{"name":"if","hash":{},"fn":container.program(41, data, 0, blockParams, depths),"inverse":container.noop,"data":data})) != null ? stack1 : "")
+    + ((stack1 = helpers["if"].call(alias1,(depth0 != null ? depth0.frequencies : depth0),{"name":"if","hash":{},"fn":container.program(44, data, 0, blockParams, depths),"inverse":container.noop,"data":data})) != null ? stack1 : "")
     + "</div><span class=\""
-    + ((stack1 = helpers["if"].call(alias1,(data && data.last),{"name":"if","hash":{},"fn":container.program(45, data, 0, blockParams, depths),"inverse":container.noop,"data":data})) != null ? stack1 : "")
+    + ((stack1 = helpers["if"].call(alias1,(data && data.last),{"name":"if","hash":{},"fn":container.program(47, data, 0, blockParams, depths),"inverse":container.noop,"data":data})) != null ? stack1 : "")
     + "\">、</span></div>";
-},"34":function(container,depth0,helpers,partials,data) {
+},"36":function(container,depth0,helpers,partials,data) {
     var stack1, helper, options;
 
-  stack1 = ((helper = (helper = helpers.furigana || (depth0 != null ? depth0.furigana : depth0)) != null ? helper : helpers.helperMissing),(options={"name":"furigana","hash":{},"fn":container.program(35, data, 0),"inverse":container.noop,"data":data}),(typeof helper === "function" ? helper.call(depth0 != null ? depth0 : (container.nullContext || {}),options) : helper));
+  stack1 = ((helper = (helper = helpers.furigana || (depth0 != null ? depth0.furigana : depth0)) != null ? helper : helpers.helperMissing),(options={"name":"furigana","hash":{},"fn":container.program(37, data, 0),"inverse":container.noop,"data":data}),(typeof helper === "function" ? helper.call(depth0 != null ? depth0 : (container.nullContext || {}),options) : helper));
   if (!helpers.furigana) { stack1 = helpers.blockHelperMissing.call(depth0,stack1,options)}
   if (stack1 != null) { return stack1; }
   else { return ''; }
-},"35":function(container,depth0,helpers,partials,data) {
+},"37":function(container,depth0,helpers,partials,data) {
     var stack1;
 
   return ((stack1 = container.lambda(depth0, depth0)) != null ? stack1 : "");
-},"37":function(container,depth0,helpers,partials,data) {
-    return "<a href=\"#\" class=\"action-play-audio\"><img src=\"/mixed/img/play-audio.svg\" title=\"Play audio\" alt></a>";
 },"39":function(container,depth0,helpers,partials,data) {
+    return "<a href=\"#\" class=\"action-play-audio\"><img src=\"/mixed/img/play-audio.svg\" title=\"Play audio\" alt></a>";
+},"41":function(container,depth0,helpers,partials,data) {
     var stack1;
 
   return "<div class=\"tags\">"
-    + ((stack1 = helpers.each.call(depth0 != null ? depth0 : (container.nullContext || {}),(depth0 != null ? depth0.termTags : depth0),{"name":"each","hash":{},"fn":container.program(40, data, 0),"inverse":container.noop,"data":data})) != null ? stack1 : "")
+    + ((stack1 = helpers.each.call(depth0 != null ? depth0 : (container.nullContext || {}),(depth0 != null ? depth0.termTags : depth0),{"name":"each","hash":{},"fn":container.program(42, data, 0),"inverse":container.noop,"data":data})) != null ? stack1 : "")
     + "</div>";
-},"40":function(container,depth0,helpers,partials,data) {
+},"42":function(container,depth0,helpers,partials,data) {
     var helper, alias1=depth0 != null ? depth0 : (container.nullContext || {}), alias2=helpers.helperMissing, alias3="function", alias4=container.escapeExpression;
 
   return "                <span class=\"label label-default tag-"
@@ -376,13 +382,13 @@ templates['terms.html'] = template({"1":function(container,depth0,helpers,partia
     + "\">"
     + alias4(((helper = (helper = helpers.name || (depth0 != null ? depth0.name : depth0)) != null ? helper : alias2),(typeof helper === alias3 ? helper.call(alias1,{"name":"name","hash":{},"data":data}) : helper)))
     + "</span>\n";
-},"42":function(container,depth0,helpers,partials,data) {
+},"44":function(container,depth0,helpers,partials,data) {
     var stack1;
 
   return "<div class=\"frequencies\">"
-    + ((stack1 = helpers.each.call(depth0 != null ? depth0 : (container.nullContext || {}),(depth0 != null ? depth0.frequencies : depth0),{"name":"each","hash":{},"fn":container.program(43, data, 0),"inverse":container.noop,"data":data})) != null ? stack1 : "")
+    + ((stack1 = helpers.each.call(depth0 != null ? depth0 : (container.nullContext || {}),(depth0 != null ? depth0.frequencies : depth0),{"name":"each","hash":{},"fn":container.program(45, data, 0),"inverse":container.noop,"data":data})) != null ? stack1 : "")
     + "</div>";
-},"43":function(container,depth0,helpers,partials,data) {
+},"45":function(container,depth0,helpers,partials,data) {
     var helper, alias1=depth0 != null ? depth0 : (container.nullContext || {}), alias2=helpers.helperMissing, alias3="function", alias4=container.escapeExpression;
 
   return "                <span class=\"label label-default tag-frequency\">"
@@ -390,45 +396,45 @@ templates['terms.html'] = template({"1":function(container,depth0,helpers,partia
     + ":"
     + alias4(((helper = (helper = helpers.frequency || (depth0 != null ? depth0.frequency : depth0)) != null ? helper : alias2),(typeof helper === alias3 ? helper.call(alias1,{"name":"frequency","hash":{},"data":data}) : helper)))
     + "</span>\n";
-},"45":function(container,depth0,helpers,partials,data) {
-    return "invisible";
 },"47":function(container,depth0,helpers,partials,data) {
+    return "invisible";
+},"49":function(container,depth0,helpers,partials,data) {
     var stack1, helper, options, alias1=depth0 != null ? depth0 : (container.nullContext || {}), buffer = 
   "    <div class=\"expression expression-scan-toggle\">";
-  stack1 = ((helper = (helper = helpers.kanjiLinks || (depth0 != null ? depth0.kanjiLinks : depth0)) != null ? helper : helpers.helperMissing),(options={"name":"kanjiLinks","hash":{},"fn":container.program(34, data, 0),"inverse":container.noop,"data":data}),(typeof helper === "function" ? helper.call(alias1,options) : helper));
+  stack1 = ((helper = (helper = helpers.kanjiLinks || (depth0 != null ? depth0.kanjiLinks : depth0)) != null ? helper : helpers.helperMissing),(options={"name":"kanjiLinks","hash":{},"fn":container.program(36, data, 0),"inverse":container.noop,"data":data}),(typeof helper === "function" ? helper.call(alias1,options) : helper));
   if (!helpers.kanjiLinks) { stack1 = helpers.blockHelperMissing.call(depth0,stack1,options)}
   if (stack1 != null) { buffer += stack1; }
   return buffer + "</div>\n"
-    + ((stack1 = helpers["if"].call(alias1,(depth0 != null ? depth0.termTags : depth0),{"name":"if","hash":{},"fn":container.program(48, data, 0),"inverse":container.noop,"data":data})) != null ? stack1 : "");
-},"48":function(container,depth0,helpers,partials,data) {
+    + ((stack1 = helpers["if"].call(alias1,(depth0 != null ? depth0.termTags : depth0),{"name":"if","hash":{},"fn":container.program(50, data, 0),"inverse":container.noop,"data":data})) != null ? stack1 : "");
+},"50":function(container,depth0,helpers,partials,data) {
     var stack1;
 
   return "    <div style=\"display: inline-block;\">\n"
     + ((stack1 = helpers.each.call(depth0 != null ? depth0 : (container.nullContext || {}),(depth0 != null ? depth0.termTags : depth0),{"name":"each","hash":{},"fn":container.program(7, data, 0),"inverse":container.noop,"data":data})) != null ? stack1 : "")
     + "    </div>\n";
-},"50":function(container,depth0,helpers,partials,data) {
+},"52":function(container,depth0,helpers,partials,data) {
     var stack1;
 
   return "    <div class=\"reasons\">\n"
-    + ((stack1 = helpers.each.call(depth0 != null ? depth0 : (container.nullContext || {}),(depth0 != null ? depth0.reasons : depth0),{"name":"each","hash":{},"fn":container.program(51, data, 0),"inverse":container.noop,"data":data})) != null ? stack1 : "")
+    + ((stack1 = helpers.each.call(depth0 != null ? depth0 : (container.nullContext || {}),(depth0 != null ? depth0.reasons : depth0),{"name":"each","hash":{},"fn":container.program(53, data, 0),"inverse":container.noop,"data":data})) != null ? stack1 : "")
     + "    </div>\n";
-},"51":function(container,depth0,helpers,partials,data) {
+},"53":function(container,depth0,helpers,partials,data) {
     var stack1;
 
   return "        <span class=\"reasons\">"
     + container.escapeExpression(container.lambda(depth0, depth0))
     + "</span> "
-    + ((stack1 = helpers.unless.call(depth0 != null ? depth0 : (container.nullContext || {}),(data && data.last),{"name":"unless","hash":{},"fn":container.program(52, data, 0),"inverse":container.noop,"data":data})) != null ? stack1 : "")
+    + ((stack1 = helpers.unless.call(depth0 != null ? depth0 : (container.nullContext || {}),(data && data.last),{"name":"unless","hash":{},"fn":container.program(54, data, 0),"inverse":container.noop,"data":data})) != null ? stack1 : "")
     + "\n";
-},"52":function(container,depth0,helpers,partials,data) {
-    return "&laquo;";
 },"54":function(container,depth0,helpers,partials,data) {
+    return "&laquo;";
+},"56":function(container,depth0,helpers,partials,data) {
     var stack1;
 
   return "    <div>\n"
-    + ((stack1 = helpers.each.call(depth0 != null ? depth0 : (container.nullContext || {}),(depth0 != null ? depth0.frequencies : depth0),{"name":"each","hash":{},"fn":container.program(55, data, 0),"inverse":container.noop,"data":data})) != null ? stack1 : "")
+    + ((stack1 = helpers.each.call(depth0 != null ? depth0 : (container.nullContext || {}),(depth0 != null ? depth0.frequencies : depth0),{"name":"each","hash":{},"fn":container.program(57, data, 0),"inverse":container.noop,"data":data})) != null ? stack1 : "")
     + "    </div>\n";
-},"55":function(container,depth0,helpers,partials,data) {
+},"57":function(container,depth0,helpers,partials,data) {
     var helper, alias1=depth0 != null ? depth0 : (container.nullContext || {}), alias2=helpers.helperMissing, alias3="function", alias4=container.escapeExpression;
 
   return "        <span class=\"label label-default tag-frequency\">"
@@ -436,61 +442,61 @@ templates['terms.html'] = template({"1":function(container,depth0,helpers,partia
     + ":"
     + alias4(((helper = (helper = helpers.frequency || (depth0 != null ? depth0.frequency : depth0)) != null ? helper : alias2),(typeof helper === alias3 ? helper.call(alias1,{"name":"frequency","hash":{},"data":data}) : helper)))
     + "</span>\n";
-},"57":function(container,depth0,helpers,partials,data,blockParams,depths) {
+},"59":function(container,depth0,helpers,partials,data,blockParams,depths) {
     var stack1;
 
-  return ((stack1 = helpers["if"].call(depth0 != null ? depth0 : (container.nullContext || {}),((stack1 = (depth0 != null ? depth0.definitions : depth0)) != null ? stack1["1"] : stack1),{"name":"if","hash":{},"fn":container.program(58, data, 0, blockParams, depths),"inverse":container.program(61, data, 0, blockParams, depths),"data":data})) != null ? stack1 : "");
-},"58":function(container,depth0,helpers,partials,data,blockParams,depths) {
+  return ((stack1 = helpers["if"].call(depth0 != null ? depth0 : (container.nullContext || {}),((stack1 = (depth0 != null ? depth0.definitions : depth0)) != null ? stack1["1"] : stack1),{"name":"if","hash":{},"fn":container.program(60, data, 0, blockParams, depths),"inverse":container.program(63, data, 0, blockParams, depths),"data":data})) != null ? stack1 : "");
+},"60":function(container,depth0,helpers,partials,data,blockParams,depths) {
     var stack1;
 
   return "        <ol>\n"
-    + ((stack1 = helpers.each.call(depth0 != null ? depth0 : (container.nullContext || {}),(depth0 != null ? depth0.definitions : depth0),{"name":"each","hash":{},"fn":container.program(59, data, 0, blockParams, depths),"inverse":container.noop,"data":data})) != null ? stack1 : "")
+    + ((stack1 = helpers.each.call(depth0 != null ? depth0 : (container.nullContext || {}),(depth0 != null ? depth0.definitions : depth0),{"name":"each","hash":{},"fn":container.program(61, data, 0, blockParams, depths),"inverse":container.noop,"data":data})) != null ? stack1 : "")
     + "        </ol>\n";
-},"59":function(container,depth0,helpers,partials,data,blockParams,depths) {
+},"61":function(container,depth0,helpers,partials,data,blockParams,depths) {
     var stack1;
 
   return "            <li>"
     + ((stack1 = container.invokePartial(partials.definition,depth0,{"name":"definition","hash":{"compactGlossaries":(depths[1] != null ? depths[1].compactGlossaries : depths[1])},"data":data,"helpers":helpers,"partials":partials,"decorators":container.decorators})) != null ? stack1 : "")
     + "</li>\n";
-},"61":function(container,depth0,helpers,partials,data) {
+},"63":function(container,depth0,helpers,partials,data) {
     var stack1;
 
   return ((stack1 = container.invokePartial(partials.definition,((stack1 = (depth0 != null ? depth0.definitions : depth0)) != null ? stack1["0"] : stack1),{"name":"definition","hash":{"compactGlossaries":(depth0 != null ? depth0.compactGlossaries : depth0)},"data":data,"indent":"        ","helpers":helpers,"partials":partials,"decorators":container.decorators})) != null ? stack1 : "");
-},"63":function(container,depth0,helpers,partials,data,blockParams,depths) {
+},"65":function(container,depth0,helpers,partials,data,blockParams,depths) {
     var stack1;
 
-  return ((stack1 = helpers["if"].call(depth0 != null ? depth0 : (container.nullContext || {}),(depth0 != null ? depth0.merged : depth0),{"name":"if","hash":{},"fn":container.program(57, data, 0, blockParams, depths),"inverse":container.program(64, data, 0, blockParams, depths),"data":data})) != null ? stack1 : "");
-},"64":function(container,depth0,helpers,partials,data) {
+  return ((stack1 = helpers["if"].call(depth0 != null ? depth0 : (container.nullContext || {}),(depth0 != null ? depth0.merged : depth0),{"name":"if","hash":{},"fn":container.program(59, data, 0, blockParams, depths),"inverse":container.program(66, data, 0, blockParams, depths),"data":data})) != null ? stack1 : "");
+},"66":function(container,depth0,helpers,partials,data) {
     var stack1;
 
   return ((stack1 = container.invokePartial(partials.definition,depth0,{"name":"definition","hash":{"compactGlossaries":(depth0 != null ? depth0.compactGlossaries : depth0)},"data":data,"indent":"        ","helpers":helpers,"partials":partials,"decorators":container.decorators})) != null ? stack1 : "")
     + "        ";
-},"66":function(container,depth0,helpers,partials,data) {
+},"68":function(container,depth0,helpers,partials,data) {
     var stack1, helper, options, buffer = 
   "    <pre>";
-  stack1 = ((helper = (helper = helpers.dumpObject || (depth0 != null ? depth0.dumpObject : depth0)) != null ? helper : helpers.helperMissing),(options={"name":"dumpObject","hash":{},"fn":container.program(35, data, 0),"inverse":container.noop,"data":data}),(typeof helper === "function" ? helper.call(depth0 != null ? depth0 : (container.nullContext || {}),options) : helper));
+  stack1 = ((helper = (helper = helpers.dumpObject || (depth0 != null ? depth0.dumpObject : depth0)) != null ? helper : helpers.helperMissing),(options={"name":"dumpObject","hash":{},"fn":container.program(37, data, 0),"inverse":container.noop,"data":data}),(typeof helper === "function" ? helper.call(depth0 != null ? depth0 : (container.nullContext || {}),options) : helper));
   if (!helpers.dumpObject) { stack1 = helpers.blockHelperMissing.call(depth0,stack1,options)}
   if (stack1 != null) { buffer += stack1; }
   return buffer + "</pre>\n";
-},"68":function(container,depth0,helpers,partials,data,blockParams,depths) {
+},"70":function(container,depth0,helpers,partials,data,blockParams,depths) {
     var stack1;
 
-  return ((stack1 = helpers.each.call(depth0 != null ? depth0 : (container.nullContext || {}),(depth0 != null ? depth0.definitions : depth0),{"name":"each","hash":{},"fn":container.program(69, data, 0, blockParams, depths),"inverse":container.noop,"data":data})) != null ? stack1 : "");
-},"69":function(container,depth0,helpers,partials,data,blockParams,depths) {
+  return ((stack1 = helpers.each.call(depth0 != null ? depth0 : (container.nullContext || {}),(depth0 != null ? depth0.definitions : depth0),{"name":"each","hash":{},"fn":container.program(71, data, 0, blockParams, depths),"inverse":container.noop,"data":data})) != null ? stack1 : "");
+},"71":function(container,depth0,helpers,partials,data,blockParams,depths) {
     var stack1;
 
-  return ((stack1 = helpers.unless.call(depth0 != null ? depth0 : (container.nullContext || {}),(data && data.first),{"name":"unless","hash":{},"fn":container.program(70, data, 0, blockParams, depths),"inverse":container.noop,"data":data})) != null ? stack1 : "")
+  return ((stack1 = helpers.unless.call(depth0 != null ? depth0 : (container.nullContext || {}),(data && data.first),{"name":"unless","hash":{},"fn":container.program(72, data, 0, blockParams, depths),"inverse":container.noop,"data":data})) != null ? stack1 : "")
     + "\n"
-    + ((stack1 = container.invokePartial(partials.term,depth0,{"name":"term","hash":{"source":(depths[1] != null ? depths[1].source : depths[1]),"compactGlossaries":(depths[1] != null ? depths[1].compactGlossaries : depths[1]),"playback":(depths[1] != null ? depths[1].playback : depths[1]),"addable":(depths[1] != null ? depths[1].addable : depths[1]),"merged":(depths[1] != null ? depths[1].merged : depths[1]),"grouped":(depths[1] != null ? depths[1].grouped : depths[1]),"debug":(depths[1] != null ? depths[1].debug : depths[1])},"data":data,"helpers":helpers,"partials":partials,"decorators":container.decorators})) != null ? stack1 : "");
-},"70":function(container,depth0,helpers,partials,data) {
-    return "<hr>";
+    + ((stack1 = container.invokePartial(partials.term,depth0,{"name":"term","hash":{"history":(depths[1] != null ? depths[1].history : depths[1]),"source":(depths[1] != null ? depths[1].source : depths[1]),"compactGlossaries":(depths[1] != null ? depths[1].compactGlossaries : depths[1]),"playback":(depths[1] != null ? depths[1].playback : depths[1]),"addable":(depths[1] != null ? depths[1].addable : depths[1]),"merged":(depths[1] != null ? depths[1].merged : depths[1]),"grouped":(depths[1] != null ? depths[1].grouped : depths[1]),"debug":(depths[1] != null ? depths[1].debug : depths[1])},"data":data,"helpers":helpers,"partials":partials,"decorators":container.decorators})) != null ? stack1 : "");
 },"72":function(container,depth0,helpers,partials,data) {
+    return "<hr>";
+},"74":function(container,depth0,helpers,partials,data) {
     return "<p class=\"note\">No results found.</p>\n";
 },"compiler":[7,">= 4.0.0"],"main":function(container,depth0,helpers,partials,data,blockParams,depths) {
     var stack1;
 
   return "\n\n"
-    + ((stack1 = helpers["if"].call(depth0 != null ? depth0 : (container.nullContext || {}),(depth0 != null ? depth0.definitions : depth0),{"name":"if","hash":{},"fn":container.program(68, data, 0, blockParams, depths),"inverse":container.program(72, data, 0, blockParams, depths),"data":data})) != null ? stack1 : "");
+    + ((stack1 = helpers["if"].call(depth0 != null ? depth0 : (container.nullContext || {}),(depth0 != null ? depth0.definitions : depth0),{"name":"if","hash":{},"fn":container.program(70, data, 0, blockParams, depths),"inverse":container.program(74, data, 0, blockParams, depths),"data":data})) != null ? stack1 : "");
 },"main_d":  function(fn, props, container, depth0, data, blockParams, depths) {
 
   var decorators = container.decorators;
diff --git a/ext/mixed/js/display.js b/ext/mixed/js/display.js
index ed3d9adc..bd4b13d1 100644
--- a/ext/mixed/js/display.js
+++ b/ext/mixed/js/display.js
@@ -37,6 +37,8 @@ class Display {
         this.eventListenersActive = false;
         this.clickScanPrevent = false;
 
+        this.poppedContextHistory = [];
+
         this.windowScroll = new WindowScroll();
 
         this.setInteractive(true);
@@ -55,10 +57,16 @@ class Display {
         this.sourceTermView();
     }
 
+    onHistoryTermView(e) {
+        e.preventDefault();
+        this.poppedTermView();
+    }
+
     async onKanjiLookup(e) {
         try {
             e.preventDefault();
             if (!this.context) { return; }
+            this.poppedContextHistory = [];
 
             const link = e.target;
             const context = {
@@ -72,6 +80,7 @@ class Display {
                         })
                     }
                 },
+                type: 'kanji',
                 sentence: this.context.sentence,
                 url: this.context.url
             };
@@ -104,6 +113,7 @@ class Display {
     async onTermLookup(e, {disableScroll, selectText, disableHistory}={}) {
         try {
             if (!this.context) { return; }
+            this.poppedContextHistory = [];
             const termLookupResults = await this.termLookup(e);
             if (!termLookupResults) { return; }
             const {textSource, definitions} = termLookupResults;
@@ -122,6 +132,7 @@ class Display {
                         })
                     }
                 },
+                type: 'terms',
                 disableScroll,
                 sentence,
                 url: this.context.url
@@ -207,12 +218,20 @@ class Display {
 
     onWheel(e) {
         if (e.altKey) {
-            const delta = e.deltaY;
-            if (delta !== 0) {
-                this.entryScrollIntoView(this.index + (delta > 0 ? 1 : -1), null, true);
+            if (e.deltaY !== 0) {
+                this.entryScrollIntoView(this.index + (e.deltaY > 0 ? 1 : -1), null, true);
                 e.preventDefault();
             }
         }
+        if (e.shiftKey) {
+            const delta = e.deltaX || e.deltaY;
+            if (delta > 0) {
+                this.sourceTermView();
+                e.preventDefault();
+            } else if (delta < 0) {
+                this.poppedTermView();
+            }
+        }
     }
 
     onRuntimeMessage({action, params}, sender, callback) {
@@ -293,6 +312,7 @@ class Display {
             this.addEventListeners('.action-play-audio', 'click', this.onAudioPlay.bind(this));
             this.addEventListeners('.kanji-link', 'click', this.onKanjiLookup.bind(this));
             this.addEventListeners('.source-term', 'click', this.onSourceTermView.bind(this));
+            this.addEventListeners('.history-term', 'click', this.onHistoryTermView.bind(this));
             if (this.options.scanning.enablePopupSearch) {
                 this.addEventListeners('.glossary-item', 'mouseup', this.onGlossaryMouseUp.bind(this));
                 this.addEventListeners('.glossary-item', 'mousedown', this.onGlossaryMouseDown.bind(this));
@@ -342,6 +362,7 @@ class Display {
             const params = {
                 definitions,
                 source: context.source,
+                history: this.poppedContextHistory.length > 0,
                 addable: options.anki.enable,
                 grouped: options.general.resultOutputMode === 'group',
                 merged: options.general.resultOutputMode === 'merge',
@@ -396,6 +417,7 @@ class Display {
             const params = {
                 definitions,
                 source: context.source,
+                history: this.poppedContextHistory.length > 0,
                 addable: options.anki.enable,
                 debug: options.general.debugInfo
             };
@@ -506,10 +528,28 @@ class Display {
 
     sourceTermView() {
         if (!this.context || !this.context.source) { return; }
+        this.poppedContextHistory.push({
+            type: this.context.type,
+            details: {
+                definitions: this.definitions,
+                context: Object.assign({}, this.context, {
+                    index: this.index,
+                    scroll: this.windowScroll.y
+                })
+            }
+        });
         const {type, details} = this.context.source;
         this.setContent(type, details);
     }
 
+    poppedTermView() {
+        if (this.poppedContextHistory.length === 0) { return; }
+        this.context.index = this.index;
+        this.context.scroll = this.windowScroll.y;
+        const {type, details} = this.poppedContextHistory.pop();
+        this.setContent(type, details);
+    }
+
     noteTryAdd(mode) {
         const button = this.adderButtonFind(this.index, mode);
         if (button !== null && !button.classList.contains('disabled')) {
@@ -783,6 +823,14 @@ Display.onKeyDownHandlers = {
         return false;
     },
 
+    'F': (self, e) => {
+        if (e.altKey) {
+            self.poppedTermView();
+            return true;
+        }
+        return false;
+    },
+
     'E': (self, e) => {
         if (e.altKey) {
             self.noteTryAdd('term-kanji');