AutoCad and LT provide a list of almost all commands and variables in HELP: while in LT, type HELP or click on Help in the Pulldown Menu or Toolbar Button. Click on the Contents Tab, then click on the + sign next to the chapter labeled Command Reference.
For a more comprehensive list that covers all current versions of LT and AutoCAD, click here for Commands and here for Variables: note that these include full AutoCAD commands that may not be available in LT, as discussed HERE.
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