Various Appocalypses, Exegeses, and Synopses use rules in example codes.
These were gathered together by PM and implemented in PGE. Larry asked
for them to be listed in S05 & for a short description to be added.
Timothy Nelson added them and I have just described them.
This yielded some extra changes I am documenting here.
a) Some reordering grouping similar functionality.
b) Removal of deprecated items from the S05.pod (it seems odd that a
language Specification should declared something to be deprecated). They
are evolutionary artifacts taken from Exegeses.
Specifically, the removed items <lt> <gt> <dot> <sp> are mentioned in
E05. (Are simply '<' '>' '.' ' ', respectively)
c) Addition of <word> as alphanumeric plus '_' - the definition from perl5.
The definition for <wb> needed some attention.
In the PGE code <wb> is described as having the same definition as
perl5. But perl5 documentation states
" A word boundary is a spot between two characters that has a \w on one
side of it and a \W on the other side of it (in either order), counting
the imaginary characters off the beginning and end of the string as
matching a \W ."
Perl6 does not mention the equivalent of \w, obviously <word>, which
yields the compliment <-word> automatically.
d) <null> and <fail> were first mentioned in the Appocalpses but changed
to <?> and <!>. Replaced <null> and <fail>
