Positive Lookbehind(?<=_) _the literal _ (9510 / 1378 / 5F16)
Negative Lookahead(?![0.]+_) +matches at least one character from the set below:
0the literal 0 (4810 / 608 / 3016)
.the literal . (4610 / 568 / 2E16)
_the literal _ (9510 / 1378 / 5F16)
\d+a digit, repeated at least once
\.the literal . (4610 / 568 / 2E16)
\d+a digit, repeated at least once
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