\\the literal \ (9210 / 1348 / 5C16)
+repeats the group contents below at least once:
Character Class[a-zA-Z0-9_$] a-zone character from a (9710) to z (12210) (case sensitive)
A-Zone character from A (6510) to Z (9010) (case sensitive)
0-9one character from 0 (4810) to 9 (5710)
_the literal _ (9510 / 1378 / 5F16)
$the literal $ (3610 / 448 / 2416)
\.the literal . (4610 / 568 / 2E16)
\w+any word character, repeated at least once
'the literal ' (3910 / 478 / 2716)
\sany 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