acet-ui-entsel

(acet-ui-entsel  sellst)

This function provides entity selection, like (entsel), with much more comfort.
The sellst argument controls the behaviour of entity selection, and must have this format :
(msg flags keys useWindow filter allowLocked)

msg : user prompt (string)
flags : bit values as used by (initget) function (integer)
keys : keyword string as used by (initget) function (string)
useWindow : allow to switch to "crossing window" selection, if no entity is selected (T/NIL)
filter : filter condition, as used by (ssget "C" ... filter) when switching to "crossing window" selection
allowLocked : if T, selection of entity/entities on locked layers is allowed; NIL to disallow

Each argument can be set as NIL, which uses default values (or none) in that case.