Am 18.01.2026 um 20:07 schrieb Sven Schreiber: For the record, an off-list communication turned up the "suradf" package which does this. Basically, what the "obs" thing does (in this context) is that the integer parameter is interpreted as an observation index, and so in the graphical package execution dialog the applicable labels for the observation numbers are shown. E.g., for quarterly data one can select something like "2005:3" with the mouse in the dialog, and internally the plain corresponding index number will be used. (Similar to what the scripting functions obslabel() and obsnum() do.) cheers sven