afni.nimh.nih.gov

You can add the following to obtain the directionality of age effecct:

-gltCode t 'Age :' \

Also, you need to add a space after Risk and Age on the following two lines:

-gltLabel 2 GroupRisk -gltCode 2 'Group : 1*Singr -1*Contr Risk:' \
-gltLabel 3 GroupAge -gltCode 3 'Group : 1*Singr -1*Contr Age:' \

Gang