image format trans. in grass

[Chinese Grass]

Dear netter:
  I will transfer the image of grass output raster file and raster file 
to GIF format.  Does anyone knows how to do it? or any suggestion?
Any comments are very appreciated
Thanks in advance

| Hung-Yue Lin    Graduate Student   Email:hylin at ev004.ev.nctu.edu.tw
| Institute of Environmental Engineering  Voice:011-886-35-712121-55517
| National Chiao Tung University           Fax: 011-886-35-725958
| Street: 75 Po-Ai Street, Hsinchu, Taiwan 30090, R.O.C.