Guidance on Autocad Customization

[Anonymous]

Hello,

I am an  AutoCAD User, Having knowledge on Autolisp. What are the relevant software need to learn for Customization in Autocad.

and 

I am working on Beam Lisp but i am struck at repeat/loop/while command can any one pl help me.

 I would be thankful for your Help..

[ВeekeeCZ · Accepted solution]

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@Anonymous wrote:
...

I am working on Beam Lisp but i am struck at repeat/loop/while command can any one pl help me.

...

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There is no the LOOP command in autolisp. 

See HERE or HERE for some examples. Or help REPEAT WHILE and FOREACH

If you have some specific question or example, shot!