^start of line
\s*a Unicode whitespace character, repeated any number of times
\+the literal + (4310 / 538 / 2B16)
\s?optionally matches a Unicode whitespace character
\d+a Unicode decimal digit, repeated at least once
\s?optionally matches a Unicode whitespace character
+matches at least one character from the set below:
\wa Unicode word character
,the literal , (4410 / 548 / 2C16)
\da Unicode decimal digit
$end of line
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