
I found it. It's the best editor application. Thank you.
Character Matches...
\ror\n line break
\t tab
\f page break (form feed)
\xNN hexadecimal character code NN (for example,
\x0D for CR)
\x{NNNN} any number of hexadecimal characters NN... (for example, \x{0} will match a null, \x{304F}
