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Returns the instance handle (HInstance) of the .EXE file for use in low-level API calls which require it. This is only used with the SYSTEM built-in variable. (READ-ONLY)

**Example:**

** PROGRAM**

**HInstance  LONG **

** CODE**

** OPEN(AppFrame)**

** HInstance = SYSTEM{****PROP:AppInstance****}  !Get .EXE instance handle for later use**

** ACCEPT**

** END**