{0,40}repeats the group contents below between 0 and 40 times:
\sany whitespace character
\Sany non-whitespace character
\"the literal " (3410 / 428 / 2216)
Character Class[0-9]{1,3} {1,3}matches between 1 and 3 characters from the set below:
0-9one character from 0 (4810) to 9 (5710)
\"the literal " (3410 / 428 / 2216)
\;the literal ; (5910 / 738 / 3B16)
\}the literal } (12510 / 1758 / 7D16)
g modifier: global. Finds all matches instead of stopping after the first