How to use absolute antenna correction in GAMIT?

It the absolute antenna correction the default one in GAMIT processing? Or it still uses the relative correction as default.


P.S.
Actually, the current default setting is to use absolute phase center correction.

antmod.dat -> ../../tables/igs05_1400.atx

I got the clue from svnav.dat file:
Note: The SV antenna offsets in this file are the old nominal values,
superseded by the values used in the models distributed as ANTEX files by the IGS.
If antmod.dat points to an absolute PCV ANTEX files, the antmod.dat values
will override the svnav.dat values (see the p-file for confirmation).