DoubleCAD XT vs. AutoCAD LT 2010 - DoubleCAD
XT is free, more intuitive handle-based object-manipulation system, uses
dropdown, fly-out menus; AutoCAD LT 2010 uses expandable ribbon-bar interface,
pop-up tool tips, Kenneth Wong, Desktop Engineering, Aug 30, 2009
What's New in AutoCAD LT 2010
- new attribute data commands, external references commands, system
variables, Ralph Grabowski, WorldCAD Access, Mar 12, 2009