On Wed, 21 May 2014, Sven Schreiber wrote: At present we have 7 "specials" with the form "genr <name>", for <name> = dummy, timedum, unitdum, time, index, unit, weekday. I haven't checked rigorously but I don't think "genr weekday" is documented (though there is a documented weekday() function). The "genr unit" special is shadowed by the accessor $unit. We could do the same for "index" if that were thought worthwhile. As for the ones that add several variables, I don't think a $-accessor would work well. We _could_ have (e.g.) an accessor $dummy that adds a bunch of series and returns a list but that would look a bit weird if you didn't need to assign the list, having "$dummy" by itself on a line of hansl. Maybe a function named "dummies" (that returns a list) with a parameter to handle the panel cases (timedum, unitdum). Allin