\d+a digit, repeated at least once
\.the literal . (4610 / 568 / 2E16)
\d+a digit, repeated at least once
%the literal % (3710 / 458 / 2516)
\Ra newline sequence
g modifier: global. Finds all matches instead of stopping after the first
m modifier: multiline. Causes ^ and $ to match the start and end of each line, not only the start and end of the string