[Pharo-users] GTDocument how to

Hi, I would like a document where user types in normal text and plugs in DrGeo view. The drgeo view will be dual. It will be alternatively the output of a DrGeo script (drgeo canvas) or the DrGeo script itself (code). The view will be interactive. In drgeo canvas mode, user plays with the geometric construction, when switched to code mode, the user edits the DrGeo script and recompute the DrGeo canvas output. Is GTDocument appropriate to do this? If so, where to start? Thanks Hilaire -- Dr. Geo http://drgeo.eu