rule#
if the pattern matches, the replace string is used. (...) defines blocks, that can be reused with $NUMBER. If three blocks are used in the pattern, we can use $1 $2 and $3 in the replace.
if the pattern matches, the replace string is used. (...) defines blocks, that can be reused with $NUMBER. If three blocks are used in the pattern, we can use $1 $2 and $3 in the replace.