Graphics & Mark-Up
The Spelljammer® logo used in Ad Astra Per Magica (and the rest of Games People Don't Play) is a TSR Netlogo. It's a big, awkward graphic, but it's what TSR wants people to use, and I'm trying to be a team player here. OK?
All of the pages at Ad Astra Per Magica were created using a good old-fashioned text editor (because I don't use HTML editors), then validated using Dave Raggett's tidy.exe.