diff --git a/LogarithmPlotter/qml/eu/ad5001/LogarithmPlotter/History/HistoryBrowser.qml b/LogarithmPlotter/qml/eu/ad5001/LogarithmPlotter/History/HistoryBrowser.qml
index 16feace..b6562e3 100644
--- a/LogarithmPlotter/qml/eu/ad5001/LogarithmPlotter/History/HistoryBrowser.qml
+++ b/LogarithmPlotter/qml/eu/ad5001/LogarithmPlotter/History/HistoryBrowser.qml
@@ -54,6 +54,7 @@ Item {
         anchors.right: parent.right
         anchors.top: parent.top
         placeholderText: qsTr("Filter...")
+        category: "all"
     }
     
     ScrollView {
diff --git a/LogarithmPlotter/qml/eu/ad5001/LogarithmPlotter/ObjectLists/Editor/CustomPropertyList.qml b/LogarithmPlotter/qml/eu/ad5001/LogarithmPlotter/ObjectLists/Editor/CustomPropertyList.qml
index a800c6e..63acf76 100644
--- a/LogarithmPlotter/qml/eu/ad5001/LogarithmPlotter/ObjectLists/Editor/CustomPropertyList.qml
+++ b/LogarithmPlotter/qml/eu/ad5001/LogarithmPlotter/ObjectLists/Editor/CustomPropertyList.qml
@@ -103,14 +103,21 @@ Repeater {
             height: 30
             label: propertyLabel
             icon: `settings/custom/${propertyIcon}.svg`
-            isDouble: propertyType == 'number'
+            isDouble: propertyType == "number"
             defValue: obj[propertyName] == null ? '' : obj[propertyName].toString()
+            category: {
+                return {
+                    "Domain": "domain",
+                    "string": "all",
+                    "number": "all"
+                }[propertyType]
+            }
             onChanged: function(newValue) {
                 try {
                     var newValueParsed = {
-                        'Domain': () => MathLib.parseDomain(newValue),
-                        'string': () => newValue,
-                        'number': () => parseFloat(newValue)
+                        "Domain": () => MathLib.parseDomain(newValue),
+                        "string": () => newValue,
+                        "number": () => parseFloat(newValue)
                     }[propertyType]()
                                         
                     // Ensuring old and new values are different to prevent useless adding to history.
diff --git a/LogarithmPlotter/qml/eu/ad5001/LogarithmPlotter/ObjectLists/Editor/Dialog.qml b/LogarithmPlotter/qml/eu/ad5001/LogarithmPlotter/ObjectLists/Editor/Dialog.qml
index a9b8052..44e4b73 100644
--- a/LogarithmPlotter/qml/eu/ad5001/LogarithmPlotter/ObjectLists/Editor/Dialog.qml
+++ b/LogarithmPlotter/qml/eu/ad5001/LogarithmPlotter/ObjectLists/Editor/Dialog.qml
@@ -107,6 +107,7 @@ Popup.BaseDialog {
                 height: 30
                 label: qsTr("Name")
                 icon: "common/label.svg"
+                category: "name"
                 width: dlgProperties.width
                 value: objEditor.obj.name
                 onChanged: function(newValue) {
diff --git a/LogarithmPlotter/qml/eu/ad5001/LogarithmPlotter/Popup/InsertCharacter.qml b/LogarithmPlotter/qml/eu/ad5001/LogarithmPlotter/Popup/InsertCharacter.qml
index d893d43..fbd1a64 100644
--- a/LogarithmPlotter/qml/eu/ad5001/LogarithmPlotter/Popup/InsertCharacter.qml
+++ b/LogarithmPlotter/qml/eu/ad5001/LogarithmPlotter/Popup/InsertCharacter.qml
@@ -31,8 +31,19 @@ Popup {
     
     signal selected(string character)
     
+    /*!
+       \qmlproperty string InsertCharacter::category
+       Type of special character to insert.
+       Possible values:
+       - expression
+       - domain
+       - name
+       - all
+    */
+    property string category: 'all'
+    
     width: 280
-    height: insertGrid.insertChars.length/insertGrid.columns*(width/insertGrid.columns)
+    height: Math.ceil(insertGrid.insertChars.length/insertGrid.columns)*(width/insertGrid.columns)+5
     modal: true
     closePolicy: Popup.CloseOnEscape | Popup.CloseOnPressOutsideParent
     
@@ -41,18 +52,40 @@ Popup {
         width: parent.width
         columns: 7
         
-        property var insertChars: [
-            "∞","π","ℝ","ℕ","ℤ","∪","∩",
+        property var insertCharsExpression: [
+            "∞","π","¹","²","³","⁴","⁵",
+            "⁶","⁷","⁸","⁹","⁰"
+        ]
+        
+        property var insertCharsDomain: [
+            "∅","∪","∩","∖","ℝ","ℕ","ℤ",
+            "⁺","⁻",...insertCharsExpression
+        ]
+        
+        property var insertCharsName: [
             "α","β","γ","δ","ε","ζ","η",
             "π","θ","κ","λ","μ","ξ","ρ",
             "ς","σ","τ","φ","χ","ψ","ω",
             "Γ","Δ","Θ","Λ","Ξ","Π","Σ",
             "Φ","Ψ","Ω","ₐ","ₑ","ₒ","ₓ",
             "ₕ","ₖ","ₗ","ₘ","ₙ","ₚ","ₛ",
-            "ₜ","¹","²","³","⁴","⁵","⁶",
-            "⁷","⁸","⁹","⁰","₁","₂","₃",
-            "₄","₅","₆","₇","₈","₉","₀"
+            "ₜ","₁","₂","₃","₄","₅","₆",
+            "₇","₈","₉","₀"
         ]
+        
+        property var insertCharsAll: [
+            ...insertCharsName, ...insertCharsDomain
+        ]
+        
+        property var insertChars: {
+            return {
+                "expression": insertCharsExpression,
+                "domain": insertCharsDomain,
+                "name": insertCharsName,
+                "all": insertCharsAll
+            }[insertPopup.category]
+        }
+        
         Repeater {
             model: parent.insertChars.length
             
diff --git a/LogarithmPlotter/qml/eu/ad5001/LogarithmPlotter/Setting/ExpressionEditor.qml b/LogarithmPlotter/qml/eu/ad5001/LogarithmPlotter/Setting/ExpressionEditor.qml
index 897abda..5a758b5 100644
--- a/LogarithmPlotter/qml/eu/ad5001/LogarithmPlotter/Setting/ExpressionEditor.qml
+++ b/LogarithmPlotter/qml/eu/ad5001/LogarithmPlotter/Setting/ExpressionEditor.qml
@@ -507,6 +507,8 @@ Item {
         x: Math.round((parent.width - width) / 2)
         y: Math.round((parent.height - height) / 2)
         
+        category: "expression"
+        
         onSelected: function(c) {
             editor.insert(editor.cursorPosition, c)
             insertPopup.close()
diff --git a/LogarithmPlotter/qml/eu/ad5001/LogarithmPlotter/Setting/TextSetting.qml b/LogarithmPlotter/qml/eu/ad5001/LogarithmPlotter/Setting/TextSetting.qml
index 539ea96..00c1347 100644
--- a/LogarithmPlotter/qml/eu/ad5001/LogarithmPlotter/Setting/TextSetting.qml
+++ b/LogarithmPlotter/qml/eu/ad5001/LogarithmPlotter/Setting/TextSetting.qml
@@ -49,6 +49,12 @@ Item {
        If true, the input is being parsed an double before being emitting the \a changed signal.
     */
     property bool isDouble: false
+    /*!
+       \qmlproperty bool TextSetting::category
+       Type of special character to insert from the popup.
+       \sa InsertCharacter::category
+    */
+    property alias category: insertPopup.category
     /*!
        \qmlproperty double TextSetting::min
        Minimum value for numbers that can be entered into the input.
diff --git a/LogarithmPlotter/qml/eu/ad5001/LogarithmPlotter/Settings.qml b/LogarithmPlotter/qml/eu/ad5001/LogarithmPlotter/Settings.qml
index 39c508f..ceca22f 100644
--- a/LogarithmPlotter/qml/eu/ad5001/LogarithmPlotter/Settings.qml
+++ b/LogarithmPlotter/qml/eu/ad5001/LogarithmPlotter/Settings.qml
@@ -255,6 +255,7 @@ ScrollView {
         Setting.TextSetting {
             id: xAxisStep
             height: 30
+            category: "expression"
             label: qsTr("X Axis Step")
             icon: "settings/xaxisstep.svg"
             width: settings.settingWidth
@@ -269,6 +270,7 @@ ScrollView {
         Setting.TextSetting {
             id: yAxisStep
             height: 30
+            category: "expression"
             label: qsTr("Y Axis Step")
             icon: "settings/yaxisstep.svg"
             width: settings.settingWidth