$a . ?^#include?a /* * We don't have perliol.h in scope (and including it may cause other problems) * so we create a routine, defined in perlio.h (where perliol.h is in scope) * to zero out the posn field. */ extern void _zero_posn_(PerlIO *fp); . /fp = saveifp;/a /* reset position to begining of file */ _zero_posn_(fp); . w