Strings to identify the various keys on the keyboard. 
 -   For alpha keys, the single (uppercase) character value
 is used, such as "Q" 
-   For Numeric keys, the number is used as in a single character string, like "1" 
-   Function
 keys are identified as "f1"-"f12"
-   Non alpha-numeric character keys (such as the key
 for "[" / "{") are identified by       their unmodified character value (the value obtained by hitting the key without  
 holding shift down), by default - exceptions are listed below. 
-   Additional key names:
 -Space
 -Tab
 -Enter
 -Escape
 -Backspace
 -Insert
 -Delete
 -Arrow_Up
 -Arrow_Down
 -Arrow_Left
 -Arrow_Right
 -Home
 -End
 -Page_Up
 -Page_Down
 -Shift
 -Ctrl
 -Alt
 [Note: Some keys may not be available for capture on every platform]