^start of string
\s*any whitespace character, repeated any number of times
<!---the literal text <!--- \s*any whitespace character, repeated any number of times
Character Class[a-zA-Z ]+ +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 (3210 / 408 / 2016)
\(the literal ( (4010 / 508 / 2816)
Character Class[a-zA-Z ]+ +matches at least one character from the set below:
a-zone character from a (9710) to z (12210) (case sensitive)
A-Zone character from A (6510) to Z (9010) (case sensitive)
the literal (3210 / 408 / 2016)
\)the literal ) (4110 / 518 / 2916)
g modifier: global. Finds all matches instead of stopping after the first