^start of line
.*any character (except for line terminators), repeated any number of times
:the literal : (5810 / 728 / 3A16)
\s+any whitespace character, repeated at least once
A-Zone character from A (6510) to Z (9010) (case sensitive)
.*any character (except for line terminators), repeated any number of times
_the literal _ (9510 / 1378 / 5F16)
\D+any character that's not a digit, repeated at least once
_the literal _ (9510 / 1378 / 5F16)
\d+a digit, repeated at least once
.*any character (except for line terminators), repeated any number of times
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