^start of string
?matches at most one character from the set below:
-the literal - (4510 / 558 / 2D16)
+the literal + (4310 / 538 / 2B16)
\d{1,2}a digit, repeated between 1 and 2 times
\.the literal . (4610 / 568 / 2E16)
\d+a digit, repeated at least once
,the literal , (4410 / 548 / 2C16)
?matches at most one character from the set below:
-the literal - (4510 / 558 / 2D16)
+the literal + (4310 / 538 / 2B16)
\d{1,3}a digit, repeated between 1 and 3 times
?repeats the group contents below at most once:
\.the literal . (4610 / 568 / 2E16)
\d+a digit, repeated at least once
$end of string, or before its final line terminator
g modifier: global. Finds all matches instead of stopping after the first