^start of line
\s*a Unicode whitespace character, repeated any number of times
\w+a Unicode word character, repeated at least once
\r?optionally matches a carriage return (ASCII 13)
\na line-feed (newline) character (ASCII 10)
\s*a Unicode whitespace character, repeated any number of times
#the literal # (3510 / 438 / 2316)
\(the literal ( (4010 / 508 / 2816)
*?matches any number of characters from the set below:
\sa Unicode whitespace character
\Sany character that is not Unicode whitespace
\)the literal ) (4110 / 518 / 2916)
\s*a Unicode whitespace character, repeated any number of times
\)the literal ) (4110 / 518 / 2916)
.*any Unicode character (except for line terminators), repeated any number of times
\r?optionally matches a carriage return (ASCII 13)
\na line-feed (newline) character (ASCII 10)
\s*a Unicode whitespace character, repeated any number of times
\w+a Unicode word character, repeated at least once
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