\w+any word character, repeated at least once
,?optionally matches the literal , (4410 / 548 / 2C16)
\s?optionally matches any whitespace character
\w*any word character, 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