#define ANYOFL 20 /* 0x14 Like ANYOF, but /l is in effect */
#define ANYOFPOSIXL 21 /* 0x15 Like ANYOFL, but matches [[:posix:]] classes */
#define ANYOFH 22 /* 0x16 Like ANYOF, but only has "High" matches, none in the bitmap; */
-#define ANYOFHb 23 /* 0x17 Like ANYOFH, but all matches share the same first byte, the repurposed flags field contains it */
+#define ANYOFHb 23 /* 0x17 Like ANYOFH, but all matches share the same UTF-8 start byte, given in the flags field */
#define ANYOFM 24 /* 0x18 Like ANYOF, but matches an invariant byte as determined by the mask and arg */
#define NANYOFM 25 /* 0x19 complement of ANYOFM */
#define POSIXD 26 /* 0x1a Some [[:class:]] under /d; the FLAGS field gives which one */