/* Platform Signatures */
 typedef enum {
     icSigMacintosh                = 0x4150504CL,    /* 'APPL' */
     icSigMicrosoft                = 0x4D534654L,    /* 'MSFT' */
     icSigSolaris                  = 0x53554E57L,    /* 'SUNW' */
     icSigSGI                      = 0x53474920L,    /* 'SGI ' */
     icSigTaligent                 = 0x54474E54L,    /* 'TGNT' */
     icMaxEnumPlatform             = 0xFFFFFFFFL     /* enum = 4 bytes max */
 } icPlatformSignature;