Many younger users may have never seen “BLIPS” and many older users have probably forgotten about them. The BLIPMODE command and System Variable have been undefined in AutoCAD® and its verticals since the 2012 release. Back in the day, if BLIPMODE was turned on, every pick would be memorialized on screen with a small, white “+” mark. ZOOMing, PANning or using the REDRAW (yes, that command did have a function once) or REGEN commands would clear these temporary markers from the screen. But if you worked for a while without needing to change your view, you could accumulate a lot of these (and would probably quickly turn BLIPMODE off).
Undefined is not the same as removed, however, and the command is still there, and the System Variable can be accessed via AutoLISP. The System Variable was (is) stored in the Windows Registry, not in the drawing file, so someone could change the setting in the registry, as well. If you find yourself working in a drawing and having blips show up…
Read more