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HlpKey

Define or Undefine Help Key

Header File.....TCXLhlp.h

Prototype.......IntT CTYP HlpKey(KeyT kc);

Source File.....HLP\HLPDEF.C

Arguments.......kc -  Key to use for Help

Returns.........ERR_NUL  -  No Error
                ERR_ARG  -  Argument Failure
                   TcxlErr contains:
                   W_NOHLPDEF  -  No Defined Help

Notes...........If <kc> is zero (0x0000), undefine current help key;
                otherwise, assign current help key to <kc>.