** the flex.1 manpage is generated by help2man; (this has been true
for quite a while but was not listed here)
-** flex now includes a single string (YY_FLEX_VERSION) to indicate
- which version of flex generated a scanner
+** flex now includes three defined constants to indicate which version
+ of flex generated a scanner (YY_FLEX_{MAJOR,MINOR,SUBMINOR}_VERSION)
** flex tries its best to output only the relevant portions of the
skeleton when generating a scanner, thus avoiding as much