Grip Menu for Polyline Editing

I was wondering how come so many cad software has grip menu for polyline. Does DraftSight has that kind of menu to edit polyline. Recently I was seeing vedio on youtube of Ares Cad that also has grip menu for editing polyline. AutoCad, Zwcad. Gcad etc. PLease help if draftsight has. Then how show I work on it. I use free version.