Draftsight

Hi all.

At work I use Draftsight pro, so far with few problems, However at home I use the free version.

Yesterday as I was at home using the free one I typed PU, which is the AutoCAD equivalent of 'Clean' (Purge),  I still use quite a lot of Acad  commands as I was brought up mainly with it before moving to DS. I was met by help box stating 'unrecognised command' Anyone else had this problem, as I've never had it before?

My work pro version still accepts it.

Thanks.

Andy.