On Sun, Oct 10, 1999 at 02:46:04PM +0200, Jan Vroonhof wrote: That's what I'm working on right now: using an external hash table for marking instead of an internal markbit. Very. You just have to rebuild the layout you want in memory in the file you write. Actually I loved your suggestion, and I'm in the process of removing all the flags from the lrecord header. The *readonly flags are almost unused, the *dumped flags a mistake I'm correcting. There is no fundamental reason that would make that impossible. The only problem is that a fully running XEmacs includes a bunch of things we definitively don't want to try to dump, like devices or buffers. We would somehow have to avoid them, which is not easy if they have symbols pointing to them. OG.