/* profileClass enumerations */
 typedef enum {
 	icSigInputClass					= 0x73636E72L,	/* 'scnr' */
 	icSigDisplayClass					= 0x6D6E7472L,	/* 'mntr' */
 	icSigOutputClass					= 0x70727472L,	/* 'prtr' */
 	icSigLinkClass					= 0x6C696E6BL,	/* 'link' */
 	icSigAbstractClass					= 0x61627374L,	/* 'abst' */
 	icSigColorSpaceClass						= 0x73706163L,	/* 'spac' */
 	icSigNamedColorClass						= 0x6E6D636CL,	/* 'nmcl' */
 	icMaxEnumClass					= 0xFFFFFFFFL	/* enum = 4 bytes max */
 } icProfileClassSignature;