Please forgive me is this is a totally obvious and previously covered
question... but there's nothing useful in any online or written
documentation (e.g., Hammel's new GIMP book) on how to consistently
save files in GIF format, especially with transparency.
I know that the image must be flattened, and the colors indexed, but
this doesn't always work... especially if I run a filter on the image.
Often flattening the image destroys it (I suppose the transparency is
somehow messing things up). And even then, it won't allow me to save
in GIF format.
Is there some clearly defined set of steps I can use to save a GIF
file and keep the transparent background?
Thanks a million for any help any one can provide!