^start of line
\s*any whitespace character, repeated any number of times
\d+a digit, repeated at least once
\s*any whitespace character, repeated any number of times
,the literal , (4410 / 548 / 2C16)
.*?any character (except for line terminators), repeated any number of times
Non-Capturing Group(?:\((\d{4})\))? ?repeats the group contents below at most once:
\(the literal ( (4010 / 508 / 2816)
\d{4}a digit, repeated exactly 4 times
\)the literal ) (4110 / 518 / 2916)
\s*any whitespace character, repeated any number of times
,the literal , (4410 / 548 / 2C16)
\s*any whitespace character, repeated any number of times
.*any character (except for line terminators), repeated any number of times
$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