\s*any whitespace character, repeated any number of times
circlethe literal text circle (case sensitive) \(the literal ( (4010 / 508 / 2816)
\da digit
Non-Capturing Group(?:\.\d+)? ?repeats the group contents below at most once:
\.the literal . (4610 / 568 / 2E16)
\d+a digit, repeated at least once
,the literal , (4410 / 548 / 2C16)
\s*any whitespace character, repeated any number of times
?repeats the group contents below at most once:
\da digit
Non-Capturing Group(?:\.\d+) \.the literal . (4610 / 568 / 2E16)
\d+a digit, repeated at least once
\)the literal ) (4110 / 518 / 2916)
\s*any whitespace character, repeated any number of times
g modifier: global. Finds all matches instead of stopping after the first