Here is an AutoCAD tip you've never needed before...
CAD Forum post how to turn on the command line if you’ve turned it off. It may have been there for 20 releases but I suggest you try working without it, you might like it!
CAD Forum saved us a the cost of a service call-out this week as I found out that the “11:11 Call HP” error on our plotter indicated a loose print-head cable from the site. Thanks for the tip, had us plotting again in a few minutes after checking the plug contacts!
Its also great they have an RSS XML feed so the tips arrive in my aggregator as soon as posted.
CAD Forum - AutoCAD 2006 doesn't display my command line window - how to get it back?