NAME

istag - indicates whether a given tag is in use within the currently 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 if t is in use within the currently open object and FALSE if it is not in use. The result is undefined if there is no currently open object. 

SEE ALSO

gentag, isobj

NOTE

This command can be used only in immediate mode. 

Version 2.3  —  July 04, 1985