call sync_memory vs call sync_memory()

From: Gene Wagenbreth (genew_nospam_at_isi.edu)
Date: 09/28/04 

Date: Tue, 28 Sep 2004 11:05:02 -0700

Using CAF on a CRAY.

call sync_memory - gets undefined external

call sync_memory() - works

if a subroutine has no args, what diference does the empty set of parens
make.