Edit C:\Program Files\Common Files\microsoft shared\ink\fsdefinitions\osknumpad\osknumpadbase.xml

<?xml version="1.0"?>
<KeyDefinitions   modifierType="Normal" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation=".\..\KeyDefinitionSchema.xsd">
  <State modifier="Any">
    <Key  Id="45" modifierType="Locking" modifierName="NumLock" extended="true" repeat="0" />
    <Key  Id="10650" payload="1c" extended="true" />
    <Key  Id="10651" payload="35" extended="true" />
    <Key  Id="10652" payload="37" />
    <Key  Id="10653" payload="4a" />
    <Key  Id="10654" payload="4e" />
    <Key  Id="10655" payload="49" />
    <Key  Id="10656" payload="51" />
    <Key  Id="10657" payload="47" />
    <Key  Id="10658" payload="4f" />
    <Key  Id="10659" payload="4b" />
    <Key  Id="10660" payload="48" />
    <Key  Id="10661" payload="4d" />
    <Key  Id="10662" payload="50" />
    <Key  Id="10663" payload="52" />
    <Key  Id="10664" payload="4c" />
    <Key  Id="10665" payload="53" />
  </State>
  <State modifier="NumLock">
    <Key  Id="10655" payload="49" />
    <Key  Id="10656" payload="51" />
    <Key  Id="10657" payload="47" />
    <Key  Id="10658" payload="4f" />
    <Key  Id="10659" payload="4b" />
    <Key  Id="10660" payload="48" />
    <Key  Id="10661" payload="4d" />
    <Key  Id="10662" payload="50" />
    <Key  Id="10663" payload="52" />
    <Key  Id="10664" payload="4c" />
    <Key  Id="10665" payload="53" />
  </State>  
</KeyDefinitions>

Ms-Dos/Windows Unix Write backup

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