C Language and Libraries Help (clang.hlp) (Table of Contents; Topic list)
_chain_intr
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─────Run-Time Library───────────────────────────────────────────────────────
 
  Include:   <dos.h>
 
  Syntax:    void _chain_intr( void
                               ( __cdecl __interrupt __far *target)() );
 
  See also:  _dos_keep, __interrupt, _dos_getvect, _dos_setvect
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