http://www.zwsoft.com/forum/viewthread.php?tid=2260 I am looking for a script solution to merge all layers to layer 0. First I unlock all layers and switch to layer 0. My srcipt looks like this: (defun c:lm0 () (command "._LAYER" "_UNLOCK" "*" "") (command "._LAYER" "_THAW" "*" "") (command "._LAYER" "_ON" "*" "") (command "._LAYER" "_ON" "0" "_UNLOCK" "0" "_THAW" "0" "S" "0" "") (command "._LAYMRG" "N" "*" "" "N" "0") (princ) ) Problem is that -laymrg will not accept * to select all layers. How can you do that? AlanCullen 2012-07-11 17:32:55 http://www.zwsoft.com/forum/viewthread.php?tid=2260&pid=15368 You may have to do something like this, where you iterate the layer collection, feeding each layer name into the LAYMRG command. Code: (vlax-for x (vla-get-Layers (vla-get-ActiveDocument (vlax-get-acad-object))) (command "._laymrg" "_N" (vla-get-Name x) "" "_N" "0" "_Y") ) MKKCAD 2012-07-11 17:48:09