<p class="wb_h1">Key Map</p>
Handles mapping key events to handling functions for an element or a Component. 
WebBuilder encapsulate Ext.util.KeyMap to this control.<br><br>
<p class="wb_h2">1. Properties</p>
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<b>tagProperties</b><br>
Any text to be appended to the object's config options directly.<br>
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<b>target</b><br>
The object on which to listen for the event, default window.<br><br>
<p class="wb_h2">Others please refer to Ext JS docs Ext.util.KeyMap</p>