bim:has-material

(bim:has-material name [ global ])

This function verifies whether the specified BIM material exists in the document library (default), or in the global library.

Arguments	name (string) the case-sensitive name of the material to be verified global (optional, default NIL) if 'global' is specified and non-NIL, the material is verified against the global database, otherwise verified against the document-specific library
Return	T if the specified material exists in the particular library, NIL otherwise
Example	(bim:has-material "Bronze") T (bim:has-material "Bronze" T) T (bim:has-material "Paper") NIL (bim:has-material "Paper" T) NIL
Remarks	the material name is case-sensitive !