Negative Lookbehind(?<!\S) \Sany non-whitespace character
-?optionally matches the literal - (4510 / 558 / 2D16)
\d+a digit, repeated at least once
Non-Capturing Group(?:\.\d+)? ?repeats the group contents below at most once:
\.the literal . (4610 / 568 / 2E16)
\d+a digit, repeated at least once
Non-Capturing Group(?:/-?\d+(?:\.\d+)?)? ?repeats the group contents below at most once:
/the literal / (4710 / 578 / 2F16)
-?optionally matches the literal - (4510 / 558 / 2D16)
\d+a digit, repeated at least once
Non-Capturing Group(?:\.\d+)? ?repeats the group contents below at most once:
\.the literal . (4610 / 568 / 2E16)
\d+a digit, repeated at least once
m?optionally matches the literal m (10910 / 1558 / 6D16) (case sensitive)
Athe literal A (6510 / 1018 / 4116) (case sensitive)
Non-Capturing Group(?:[DA]C)? ?repeats the group contents below at most once:
Dthe literal D (6810 / 1048 / 4416) (case sensitive)
Athe literal A (6510 / 1018 / 4116) (case sensitive)
Cthe literal C (6710 / 1038 / 4316) (case sensitive)
\Sany non-whitespace character
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