Auto-cad Secret's Exposed.....!!!

This all secret/commands were good to work with 2000+ versions of Auto-cad.
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Step 1:
1.)TRIM AND EXTENDED DIMENSIONS:-
Trim and extend commands were common commands for all people who were working on auto-cad,this is such a handy feature and it seems that most user don't even know they can do this.
Use either Trim or Extend command to modify dimensions as well as arc, lines etc.
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Step 2:
2.)TRIM YOUR HATCHES:-
The new hatch capabilities allow you to trim your hatches just like you would other objects.