diff --git a/EurKEY.keylayout b/EurKEY.keylayout
index 9888b03..91d11ca 100644
--- a/EurKEY.keylayout
+++ b/EurKEY.keylayout
@@ -89,7 +89,7 @@
             <key code="44" output="/"/>
             <key code="45" action="n"/>
             <key code="46" action="m"/>
-            <key code="47" output="."/>
+            <key code="47" action="."/>
             <key code="48" output="&#x0009;"/>
             <key code="49" action="space"/>
             <key code="50" output="`"/>
@@ -195,16 +195,16 @@
             <key code="38" action="J"/>
             <key code="39" action="&#x0022;"/>
             <key code="40" action="K"/>
-            <key code="41" output=":"/>
-            <key code="42" output="|"/>
-            <key code="43" output="&#x003C;"/>
+            <key code="41" action=":"/>
+            <key code="42" action="|"/>
+            <key code="43" action="&#x003C;"/>
             <key code="44" output="?"/>
             <key code="45" action="N"/>
             <key code="46" action="M"/>
-            <key code="47" output="&#x003E;"/>
+            <key code="47" action="&#x003E;"/>
             <key code="48" output="&#x0009;"/>
             <key code="49" action="space"/>
-            <key code="50" output="~"/>
+            <key code="50" action="~"/>
             <key code="51" output="&#x0008;"/>
             <key code="52" output="&#x0003;"/>
             <key code="53" output="&#x001B;"/>
@@ -293,7 +293,7 @@
             <key code="24" action="="/>
             <key code="25" action="9"/>
             <key code="26" action="7"/>
-            <key code="27" output="-"/>
+            <key code="27" action="-"/>
             <key code="28" action="8"/>
             <key code="29" action="0"/>
             <key code="30" output="]"/>
@@ -540,7 +540,7 @@
             <key code="47" output="Ó"/>
             <key code="48" output="&#x0009;"/>
             <key code="49" output=" "/>
-            <key code="50" action="~"/>
+            <key code="50" action="~ option"/>
             <key code="51" output="&#x0008;"/>
             <key code="52" output="&#x0003;"/>
             <key code="53" output="&#x001B;"/>
@@ -1023,6 +1023,7 @@
         <action id="!">
             <when state="none" output="!"/>
             <when state="dead: Ω" output="₁"/>
+            <when state="dead: √" output="≠"/>
         </action>
         <action id="#">
             <when state="none" output="#"/>
@@ -1035,18 +1036,30 @@
         <action id="%">
             <when state="none" output="%"/>
             <when state="dead: Ω" output="₅"/>
+            <when state="dead: √" output="‰"/>
+        </action>
+        <action id="&#x003C;">
+            <when state="none" output="&#x003C;"/>
+            <when state="dead: √" output="≤"/>
+        </action>
+        <action id="&#x003E;">
+            <when state="none" output="&#x003E;"/>
+            <when state="dead: √" output="≥"/>
         </action>
         <action id="&#x0022;">
             <when state="none" output="&#x0022;"/>
             <when state="dead: Ω" output="₊"/>
+            <when state="dead: √" output="″"/>
         </action>
         <action id="&#x0026;">
             <when state="none" output="&#x0026;"/>
             <when state="dead: Ω" output="₇"/>
+            <when state="dead: √" output="∧"/>
         </action>
         <action id="&#x0027;">
             <when state="none" output="&#x0027;"/>
             <when state="dead: Ω" output="₌"/>
+            <when state="dead: √" output="′"/>
         </action>
         <action id="(">
             <when state="none" output="("/>
@@ -1059,15 +1072,22 @@
         <action id="*">
             <when state="none" output="*"/>
             <when state="dead: Ω" output="₈"/>
+            <when state="dead: √" output="⊗"/>
         </action>
         <action id="+">
             <when state="none" output="+"/>
             <when state="dead: ©" output="⇔"/>
             <when state="dead: Ω" output="⁺"/>
+            <when state="dead: √" output="⊕"/>
         </action>
         <action id="-">
             <when state="none" output="-"/>
             <when state="dead: Ω" output="⁻"/>
+            <when state="dead: √" output="±"/>
+        </action>
+        <action id=".">
+            <when state="none" output="."/>
+            <when state="dead: √" output="⋅"/>
         </action>
         <action id="0">
             <when state="none" output="0"/>
@@ -1090,11 +1110,13 @@
             <when state="dead: ©" output="¾"/>
             <when state="dead: ¯" output="—"/>
             <when state="dead: Ω" output="³"/>
+            <when state="dead: √" output="∛"/>
         </action>
         <action id="4">
             <when state="none" output="4"/>
             <when state="dead: ©" output="⅓"/>
             <when state="dead: Ω" output="⁴"/>
+            <when state="dead: √" output="∜"/>
         </action>
         <action id="5">
             <when state="none" output="5"/>
@@ -1115,23 +1137,32 @@
         <action id="7">
             <when state="none" output="7"/>
             <when state="dead: Ω" output="⁷"/>
+            <when state="dead: √" output="∡"/>
         </action>
         <action id="8">
             <when state="none" output="8"/>
             <when state="dead: Ω" output="⁸"/>
+            <when state="dead: √" output="∠"/>
         </action>
         <action id="9">
             <when state="none" output="9"/>
             <when state="dead: Ω" output="⁹"/>
+            <when state="dead: √" output="∟"/>
+        </action>
+        <action id=":">
+            <when state="none" output=":"/>
+            <when state="dead: √" output="∴"/>
         </action>
         <action id=";">
             <when state="none" output=";"/>
             <when state="dead: Ω" output="₋"/>
+            <when state="dead: √" output="∵"/>
         </action>
         <action id="=">
             <when state="none" output="="/>
             <when state="dead: ©" output="↔"/>
             <when state="dead: Ω" output="⁼"/>
+            <when state="dead: √" output="≝"/>
         </action>
         <action id="@">
             <when state="none" output="@"/>
@@ -1148,11 +1179,13 @@
             <when state="dead: ˇ" output="Ǎ"/>
             <when state="dead: ˚" output="Å"/>
             <when state="dead: Ω" output="Α"/>
+            <when state="dead: √" output="∀"/>
         </action>
         <action id="B">
             <when state="none" output="B"/>
             <when state="dead: ´" output="Ɓ"/>
             <when state="dead: Ω" output="Β"/>
+            <when state="dead: √" output="⊇"/>
         </action>
         <action id="C">
             <when state="none" output="C"/>
@@ -1162,12 +1195,14 @@
             <when state="dead: ˇ" output="Č"/>
             <when state="dead: ˚" output="Ċ"/>
             <when state="dead: Ω" output="Χ"/>
+            <when state="dead: √" output="ℂ"/>
         </action>
         <action id="D">
             <when state="none" output="D"/>
             <when state="dead: ¯" output="Đ"/>
             <when state="dead: ˇ" output="Ď"/>
             <when state="dead: Ω" output="Δ"/>
+            <when state="dead: √" output="∇"/>
         </action>
         <action id="E">
             <when state="none" output="E"/>
@@ -1179,10 +1214,12 @@
             <when state="dead: ˇ" output="Ě"/>
             <when state="dead: ˚" output="Ė"/>
             <when state="dead: Ω" output="Ε"/>
+            <when state="dead: √" output="∃"/>
         </action>
         <action id="F">
             <when state="none" output="F"/>
             <when state="dead: Ω" output="Φ"/>
+            <when state="dead: √" output="∎"/>
         </action>
         <action id="G">
             <when state="none" output="G"/>
@@ -1192,6 +1229,7 @@
             <when state="dead: ˇ" output="Ǧ"/>
             <when state="dead: ˚" output="Ġ"/>
             <when state="dead: Ω" output="Γ"/>
+            <when state="dead: √" output="⊃"/>
         </action>
         <action id="H">
             <when state="none" output="H"/>
@@ -1200,6 +1238,7 @@
             <when state="dead: ¯" output="Ħ"/>
             <when state="dead: ˇ" output="Ȟ"/>
             <when state="dead: Ω" output="Θ"/>
+            <when state="dead: √" output="⊅"/>
         </action>
         <action id="I">
             <when state="none" output="I"/>
@@ -1226,6 +1265,7 @@
             <when state="dead: ´" output="Ḱ"/>
             <when state="dead: ˇ" output="Ǩ"/>
             <when state="dead: Ω" output="Κ"/>
+            <when state="dead: √" output="∌"/>
         </action>
         <action id="L">
             <when state="none" output="L"/>
@@ -1234,12 +1274,14 @@
             <when state="dead: ´" output="Ł"/>
             <when state="dead: ˇ" output="Ľ"/>
             <when state="dead: Ω" output="Λ"/>
+            <when state="dead: √" output="∦"/>
         </action>
         <action id="M">
             <when state="none" output="M"/>
             <when state="dead: ©" output="⇘"/>
             <when state="dead: ´" output="Ḿ"/>
             <when state="dead: Ω" output="Μ"/>
+            <when state="dead: √" output="∉"/>
         </action>
         <action id="N">
             <when state="none" output="N"/>
@@ -1248,6 +1290,7 @@
             <when state="dead: ´" output="Ń"/>
             <when state="dead: ˇ" output="Ň"/>
             <when state="dead: Ω" output="Ν"/>
+            <when state="dead: √" output="ℕ"/>
         </action>
         <action id="O">
             <when state="none" output="O"/>
@@ -1259,16 +1302,19 @@
             <when state="dead: ´" output="Ó"/>
             <when state="dead: ˇ" output="Ǒ"/>
             <when state="dead: Ω" output="Ο"/>
+            <when state="dead: √" output="∅"/>
         </action>
         <action id="P">
             <when state="none" output="P"/>
             <when state="dead: ©" output="℗"/>
             <when state="dead: ´" output="Ṕ"/>
             <when state="dead: Ω" output="Π"/>
+            <when state="dead: √" output="ℙ"/>
         </action>
         <action id="Q">
             <when state="none" output="Q"/>
             <when state="dead: Ω" output="Ω"/>
+            <when state="dead: √" output="ℚ"/>
         </action>
         <action id="R">
             <when state="none" output="R"/>
@@ -1276,6 +1322,7 @@
             <when state="dead: ´" output="Ŕ"/>
             <when state="dead: ˇ" output="Ř"/>
             <when state="dead: Ω" output="Ρ"/>
+            <when state="dead: √" output="ℝ"/>
         </action>
         <action id="S">
             <when state="none" output="S"/>
@@ -1284,6 +1331,7 @@
             <when state="dead: ´" output="Ś"/>
             <when state="dead: ˇ" output="Š"/>
             <when state="dead: Ω" output="Σ"/>
+            <when state="dead: √" output="∫"/>
         </action>
         <action id="T">
             <when state="none" output="T"/>
@@ -1304,6 +1352,7 @@
             <when state="dead: ˇ" output="Ǔ"/>
             <when state="dead: ˚" output="Ů"/>
             <when state="dead: Ω" output="Ω"/>
+            <when state="dead: √" output="∖"/>
         </action>
         <action id="V">
             <when state="none" output="V"/>
@@ -1318,6 +1367,7 @@
         <action id="X">
             <when state="none" output="X"/>
             <when state="dead: Ω" output="Ξ"/>
+            <when state="dead: √" output="∄"/>
         </action>
         <action id="Y">
             <when state="none" output="Y"/>
@@ -1334,6 +1384,7 @@
             <when state="dead: ˇ" output="Ž"/>
             <when state="dead: ˚" output="Ż"/>
             <when state="dead: Ω" output="Ζ"/>
+            <when state="dead: √" output="ℤ"/>
         </action>
         <action id="[">
             <when state="none" output="["/>
@@ -1346,6 +1397,7 @@
         <action id="^">
             <when state="none" output="^"/>
             <when state="dead: Ω" output="₆"/>
+            <when state="dead: √" output="℘"/>
         </action>
         <action id="_">
             <when state="none" output="_"/>
@@ -1369,6 +1421,7 @@
             <when state="none" output="b"/>
             <when state="dead: ´" output="ɓ"/>
             <when state="dead: Ω" output="β"/>
+            <when state="dead: √" output="⊆"/>
         </action>
         <action id="c">
             <when state="none" output="c"/>
@@ -1378,12 +1431,14 @@
             <when state="dead: ˇ" output="č"/>
             <when state="dead: ˚" output="ċ"/>
             <when state="dead: Ω" output="χ"/>
+            <when state="dead: √" output="∝"/>
         </action>
         <action id="d">
             <when state="none" output="d"/>
             <when state="dead: ¯" output="đ"/>
             <when state="dead: ˇ" output="ď"/>
             <when state="dead: Ω" output="δ"/>
+            <when state="dead: √" output="Δ"/>
         </action>
         <action id="e">
             <when state="none" output="e"/>
@@ -1399,6 +1454,7 @@
         <action id="f">
             <when state="none" output="f"/>
             <when state="dead: Ω" output="φ"/>
+            <when state="dead: √" output="ƒ"/>
         </action>
         <action id="g">
             <when state="none" output="g"/>
@@ -1408,6 +1464,7 @@
             <when state="dead: ˇ" output="ǧ"/>
             <when state="dead: ˚" output="ġ"/>
             <when state="dead: Ω" output="γ"/>
+            <when state="dead: √" output="⊂"/>
         </action>
         <action id="h">
             <when state="none" output="h"/>
@@ -1416,6 +1473,7 @@
             <when state="dead: ¯" output="ħ"/>
             <when state="dead: ˇ" output="ȟ"/>
             <when state="dead: Ω" output="θ"/>
+            <when state="dead: √" output="⊄"/>
         </action>
         <action id="i">
             <when state="none" output="i"/>
@@ -1428,6 +1486,7 @@
             <when state="dead: ´" output="í"/>
             <when state="dead: ˇ" output="ǐ"/>
             <when state="dead: Ω" output="η"/>
+            <when state="dead: √" output="∞"/>
         </action>
         <action id="j">
             <when state="none" output="j"/>
@@ -1442,6 +1501,7 @@
             <when state="dead: ´" output="ḱ"/>
             <when state="dead: ˇ" output="ǩ"/>
             <when state="dead: Ω" output="κ"/>
+            <when state="dead: √" output="∋"/>
         </action>
         <action id="l">
             <when state="none" output="l"/>
@@ -1450,12 +1510,14 @@
             <when state="dead: ´" output="ł"/>
             <when state="dead: ˇ" output="ľ"/>
             <when state="dead: Ω" output="λ"/>
+            <when state="dead: √" output="∥"/>
         </action>
         <action id="m">
             <when state="none" output="m"/>
             <when state="dead: ©" output="↘"/>
             <when state="dead: ´" output="ḿ"/>
             <when state="dead: Ω" output="μ"/>
+            <when state="dead: √" output="∈"/>
         </action>
         <action id="n">
             <when state="none" output="n"/>
@@ -1464,6 +1526,7 @@
             <when state="dead: ´" output="ń"/>
             <when state="dead: ˇ" output="ň"/>
             <when state="dead: Ω" output="ν"/>
+            <when state="dead: √" output="ⁿ"/>
         </action>
         <action id="o">
             <when state="none" output="o"/>
@@ -1475,12 +1538,14 @@
             <when state="dead: ´" output="ó"/>
             <when state="dead: ˇ" output="ǒ"/>
             <when state="dead: Ω" output="ο"/>
+            <when state="dead: √" output="∘"/>
         </action>
         <action id="p">
             <when state="none" output="p"/>
             <when state="dead: ©" output="℗"/>
             <when state="dead: ´" output="ṕ"/>
             <when state="dead: Ω" output="π"/>
+            <when state="dead: √" output="∂"/>
         </action>
         <action id="q">
             <when state="none" output="q"/>
@@ -1492,6 +1557,7 @@
             <when state="dead: ´" output="ŕ"/>
             <when state="dead: ˇ" output="ř"/>
             <when state="dead: Ω" output="ρ"/>
+            <when state="dead: √" output="√"/>
         </action>
         <action id="s">
             <when state="none" output="s"/>
@@ -1500,6 +1566,7 @@
             <when state="dead: ´" output="ś"/>
             <when state="dead: ˇ" output="š"/>
             <when state="dead: Ω" output="σ"/>
+            <when state="dead: √" output="∩"/>
         </action>
         <action id="space">
             <when state="none" output=" "/>
@@ -1512,6 +1579,7 @@
             <when state="dead: ´" output="´"/>
             <when state="dead: ˇ" output="ˇ"/>
             <when state="dead: ˚" output="˚"/>
+            <when state="dead: √" output="√"/>
         </action>
         <action id="t">
             <when state="none" output="t"/>
@@ -1532,6 +1600,7 @@
             <when state="dead: ˇ" output="ǔ"/>
             <when state="dead: ˚" output="ů"/>
             <when state="dead: Ω" output="ω"/>
+            <when state="dead: √" output="∪"/>
         </action>
         <action id="v">
             <when state="none" output="v"/>
@@ -1564,16 +1633,25 @@
             <when state="dead: ˇ" output="ž"/>
             <when state="dead: ˚" output="ż"/>
             <when state="dead: Ω" output="ζ"/>
+            <when state="dead: √" output="↯"/>
         </action>
         <action id="{">
             <when state="none" output="{"/>
             <when state="dead: Ω" output="₍"/>
         </action>
+        <action id="|">
+            <when state="none" output="|"/>
+            <when state="dead: √" output="∨"/>
+        </action>
         <action id="}">
             <when state="none" output="}"/>
             <when state="dead: Ω" output="₎"/>
         </action>
         <action id="~">
+            <when state="none" output="~"/>
+            <when state="dead: √" output="≈"/>
+        </action>
+        <action id="~ option">
             <when state="none" next="dead: ~"/>
         </action>
         <action id="¨">