\d+a Unicode decimal digit, repeated at least once
\.the literal . (4610 / 568 / 2E16)
\d+a Unicode decimal digit, repeated at least once
Non-Capturing Group(?:e[+-]\d|E[-+]\d)? ?repeats the group contents below at most once:
ethe literal e (10110 / 1458 / 6516) (case sensitive)
+the literal + (4310 / 538 / 2B16)
-the literal - (4510 / 558 / 2D16)
\da Unicode decimal digit
Ethe literal E (6910 / 1058 / 4516) (case sensitive)
-the literal - (4510 / 558 / 2D16)
+the literal + (4310 / 538 / 2B16)
\da Unicode decimal digit
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