^start of line
+matches at least one character from the set below:
a-zone character from a (9710) to z (12210) (case sensitive)
A-Zone character from A (6510) to Z (9010) (case sensitive)
\(the literal ( (4010 / 508 / 2816)
\{the literal { (12310 / 1738 / 7B16)
.*any character (except for line terminators), repeated any number of times
\}the literal } (12510 / 1758 / 7D16)
\)the literal ) (4110 / 518 / 2916)
$end of line
m modifier: multiline. Causes ^ and $ to match the start and end of each line, not only the start and end of the string