SAVEGIO "GIF" FILENAME {INTERLACED} {TRANS} {DITHER} {COLOUR}
INTERLACED:
Interlaced or not. Use NOLACE or LACE
TRANS:
Transparent GIF?. Use NOTRANS or TRANS
DITHER:
Either "NODITHER", "FLOYD", "LARGEORDER", "SMALLORDER"
COLOUR:
How to generate the palette. Either, "GREYSCALE", "CALC-PAL", or "CURRENT-PAL".