NAME

istag − indicates if a given tag is used within the current open object

SPECIFICATION

C
Boolean istag(t)
Tag t;

FORTRAN
logical function istag(t)
integer*4 t

Pascal
function istag(t: Tag): longint;

DESCRIPTION

istag returns TRUE (1) if t is used within the current open object and FALSE (0) if it is not.  The result is undefined if there is no current open object. 

SEE ALSO

gentag, isobj IRIS Graphics Programming, Section 8.3, Object Editing

NOTE

This routine is available only in immediate mode. 

Version 2.5  —  April 22, 1987