LISP Compatibility

The following functions are unique to the implementation of LISP included with Bricscad:

Function	Comments
Lpad	Pads a text string with spaces to the left.
Rpad	Pads a text string with spaces to the right.
Tan	Returns the tangent.
Trim	Trims spaces from a string.

The following LISP functions in Bricscad have enhanced features.

Osnap in Bricscad supports these additional entity snap modes:

Mode	Meaning
"po"	POint
"pla"	PLAnview (2D intersection)
"vis"	VISible (apparent intersection)

The functions ssget and ssadd in Bricscad recognize these additional selection set parameters:

Mode	Meaning	Points	Example
"CC"	Crossing Circle	point1 point2	(ssget "CC" '(1 1) '(2 2))
"O"	Outside	points-list	(ssget "O" ptlist)
"OC"	Outside Circle	point1 point2	(ssget "OC" '(1 1) '(2 2))
"OP"	Outside Polygon	points-list	(ssget "OP" ptlist)
"PO"	POint	point1	(ssget "PO" '(1 1))

The following function is partially compatible with the LISP found in other CAD systems:

Function	Comments
menucmd	Bricscad supports P0 (cursor menu) and P1 through P16 (the pulldown menus). Bricscad does not support A (aux menus), B (button menus), I (icon menus), M (diesel expressions), S (screen menu), or T (tablet menus).

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