\s+any whitespace character, repeated at least once
\d+a digit, repeated at least once
\s+any whitespace character, repeated at least once
\s+any whitespace character, repeated at least once
.*?any character (except for line terminators), repeated any number of times
, USthe literal text , US (case sensitive) \ban ASCII word boundary
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