how to create a function in a list just to understand

[mduvalAA6EJ]

hello i want to know how to create a function IN a list

for example

list A

function IF, AND, SETQ

for information the list A is by autocad layout

the lisp run for all de dwg but do the job for each layout 

thank you

[martti.halminen]

Start by reading this:

http://www.catb.org/~esr/faqs/smart-questions.html

Then spend some time for example here:

https://www.afralisp.net/