No hidden traps. No more moving parts of pictures around to get them centered. Gilt is complete. There is nothing more complete than postscript. We have all the features of all picture editors because they all use postscript at one step or another.
Gilt is expandable.
Gilt has a plugin interface which allows you to expand the functionality. For an example look at the cd table of content plugin. It determines the runtime of all songs on your music cd and inserts them in your picture. It doesn't look for a cd database yet but you can do this if you want. Documentation You can produce a javadoc documentation with the sourcecode.