Hugs runs fine under plain Cygwin now (i.e. via a simple "./configure"), but only when WANT_FIXED_SIZE_TABLES is #defined to 1. Otherwise I get strange 'Undefined constructor function "Deadlock"' errors when starting Hugs, but Deadlock *is* defined (e.g. ":i Exception" shows it). Consistently renaming it to e.g. "Deadlokk" works. Hmmm... I don't understand the current memory management scheme in Hugs in detail, so I can't fix this easily for myself. Explaining DYN_TABLES and WANT_FIXED_SIZE_TABLES a bit more might be a good idea. And another bug: Using :s results in garbage in the registry. Deja vu? Puzzled, S.