These are some of my frequently used AutoLISP snippets for layer management.  I’ve got a heap of these in a lisp file that I autoload into autocad at startup.  You can find the entire file here: layer-shortcuts.lsp.

If you look through that file, you’ll see that I have a common set of layers (for 2D and general work) that I include in every drawing file. The AutoLisp commands help to speed up my drafting with these common layers.

This is the syntax for each command:

Change to layer…

(defun c:1()(setvar "clayer" "Shop - Construction"))

Move to layer…

(defun c:m2( / eset) (setq eset (ssget))
    (command ".chprop" "\_p" "" "\_la" "Shop - Dimensions" "")
    )

Look like layer [transform]…

(defun c:t1( / eset) (setq eset (ssget))
    (command ".chprop" "\_p" "" "\_c" "40" "lt" "continuous" "lw" "0.2" "")
    ) 

(defun c:t1( / eset) (setq eset (ssget))
    (command ".chprop" "\_p" "" "\_c" "40" "lt" "continuous" "lw" "0.2" "")
    )

Reset object to default layer appearance…

(defun c:by( / eset) (setq eset (ssget))
    (command ".chprop" "p" "" "c" "bylayer" "lt" "bylayer" "")
    )

copy to current layer…

(defun c:ctc() (copy\_to\_)
    (command ".chprop" "L" "" "\_p" "\_la" (getvar "clayer") "")
    )