Hello Alan, Ar an cúigiú lá de mí Meitheamh, scríobh Alan Mackenzie: Yes, they’re optional keyword parameters, as also used, for example, by #'make-hash-table. The docstring for defun* goes into more detail on the syntax. I have been considering moving the extra functionality offered by defun* into defun, but there are possible bootstrapping complications; if I do it I’ll move the relevant documentation into the defun docstring, if I don’t I’ll add a cross-reference to all the C functions that use keywords. Thanks for pointing out the weakness in our docs! Best, Aidan -- ‘Tramadol is further fed to cattle […] when working them […] (as draft animals) so that the animals do not get tired quickly. …’ — Angewandte Chemie, Sept 2014, describing the social context of (synthetic) tramadol having been found in Cameroon tree roots. _______________________________________________ XEmacs-Beta mailing list XEmacs-Beta(a)xemacs.org http://lists.xemacs.org/mailman/listinfo/xemacs-beta