I have found Xfig to be pretty useful for diagrams. The gif export doesn't seem to work that good for me, so I output to postscript and use XV to convert to gif or jpeg
> I am using tkHTML to create a WebCourse and now need to include some block > diagrams. Is anyone aware of a utility that will let me efficiently create > such diagrams in gif or jpeg format? I am currently using tgif, but am > wondering if something better is out there. > Thanks, > Richard > -- digger