$ flex --version
flex version 2.5.4
$ info flex
The size is the large enough to hold ... # Extra the
Why cant I use fast or full tables with interactive mode? # Missing apostrophe in cant
The "cant" is in the node name, which cannot contain apostrophes, due to texinfo syntax.
The extra "the" has been removed in the flex code base and will be included in the next release of flex.