Shift-Alt-H - Display strings in Hex mode
 Display strings in variable window as Hex
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 This option will toggle the display of character variables in the variables
 window between hex mode and ASCII mode.

 By default the character variables within the variable window are displayed
 in standard ASCII mode. By toggling this switch, character variables will be
 displayed in Hex mode.

 Please note that character variables held in objects and arrays are
 unaffected.