It helps to selecting objects with filters, more details
You can play with DXF codes for selecting objects by its properties, more details on DXF code
Examples for selecting specific objects :
(ssget '((0 . "CIRCLE"))) ; for Circle (ssget '((0 . "LINE"))) ; for Line (ssget '((0 . "*POLYLINE"))) ; for Polyline
Examples for selecting objects by its layer :
(ssget '((0 . "CIRCLE") (8 . "layer 1"))) ; for Layer 1
(ssget '((0 . "CIRCLE") (8 . "layer 2"))) ; for Layer 2
(ssget '((0 . "CIRCLE") (8 . "layer 3"))) ; for Layer 3
Sir Satish,
Thank you so much sir for answering my question about ssget function.
Best Regards
Albert Ebo
Read about it [as about any AutoLisp function or AutoCAD command] in Help -- that will always tell you more than anyone is likely to spell out for you here.