Greetings lordlance.
There is an Operations Manual VOL-II that does give many examples, with using the different regexs.
So you can download the manual here...
http://www.bulkrenameutility.co.uk/forum/viewtopic.php?f=12&t=5054.
The simple-checkbox is
not really regex, so this manual is probably the only place that will document how it conducts?
It uses
%# to say
(.*?) in the Match, and
%# to say
\# in the Replace, but forbids conducting any regex meta-characters.
ALL regexs will partially match inside of a text-string, so even a "Match" like
a will match any name with having an "a" inside!
The Simple and Regular regexs will
delete any text outside of your match, so they are better for matching the whole ^Name$.
The "v2" regexs will only edit text that is
inside of your match, so these can be better for editing smaller parts of your Name.
Some other main differences for v2, is that Replace should use
$1 instead of
\1 to say any of its group-numbers.
And Replace will grant case-modifiers like \u, \U, \l, \L, so like
\u$1 uppercases the very 1st-character in
$1.
The Match will also grant /modifiers, so like using a
/gi can match
all a's case-insensitive.