Hi, some function programming issues/remarks: 1. Shouldn't the following work according to the example "function series get_uhat_and_ess(series y, list xvars, scalar *ess[null])" in the manual: <script> function void check(int myarg1, int myarg2[null]) print "yes" end function check(1) </script> But I get: gretl-Version 1.9.2cvs Aktuelle Sitzung: 2010-11-11 20:22 ? function void check(int myarg1, int myarg2[null]) Syntax-Fehler in Befehlszeile Fehler bei Skriptausführung: Stopp 2. functions apparently cannot return bool or int (documented by running the trivial ones below). Note that I'm fine with this if it's desired behavior, but maybe it isn't... <script> function scalar hey3(void) print "yes3" end function hey3() function int hey2(void) print "yes2" end function hey2() function bool hey(void) print "yes" end function hey() </script> thanks, sven