^start of line
\s*any whitespace character, repeated any number of times
Group 1([\w]+\:[\w]*|<[^>]+>) 1st Alternative[\w]+\:[\w]* +matches at least one character from the set below:
\wany word character
\:the literal : (5810 / 728 / 3A16)
*matches any number of characters from the set below:
\wany word character
<the literal < (6010 / 748 / 3C16)
Negated Character Class[^>]+ +matches at least one character outside the set below:
>the literal > (6210 / 768 / 3E16)
>the literal > (6210 / 768 / 3E16)
\s+any whitespace character, repeated at least once
Group 2([\w]+\:[\w]*|<[^>]+>) 1st Alternative[\w]+\:[\w]* +matches at least one character from the set below:
\wany word character
\:the literal : (5810 / 728 / 3A16)
*matches any number of characters from the set below:
\wany word character
<the literal < (6010 / 748 / 3C16)
Negated Character Class[^>]+ +matches at least one character outside the set below:
>the literal > (6210 / 768 / 3E16)
>the literal > (6210 / 768 / 3E16)
\s+any whitespace character, repeated at least once
Group 3((\".*\"((\@[a-z][a-z])|(\^\^([\w]+\:[\w]*|<[^>]+>))|))|(?:[\w]+\:[\w]*|<[^>]+>)) 1st Alternative(\".*\"((\@[a-z][a-z])|(\^\^([\w]+\:[\w]*|<[^>]+>))|)) Group 4(\".*\"((\@[a-z][a-z])|(\^\^([\w]+\:[\w]*|<[^>]+>))|)) \"the literal " (3410 / 428 / 2216)
.*any character (except for line terminators), repeated any number of times
\"the literal " (3410 / 428 / 2216)
Group 5((\@[a-z][a-z])|(\^\^([\w]+\:[\w]*|<[^>]+>))|) 1st Alternative(\@[a-z][a-z]) \@the literal @ (6410 / 1008 / 4016)
a-zone character from a (9710) to z (12210) (case sensitive)
a-zone character from a (9710) to z (12210) (case sensitive)
2nd Alternative(\^\^([\w]+\:[\w]*|<[^>]+>)) Group 7(\^\^([\w]+\:[\w]*|<[^>]+>)) \^the literal ^ (9410 / 1368 / 5E16)
\^the literal ^ (9410 / 1368 / 5E16)
Group 8([\w]+\:[\w]*|<[^>]+>) 1st Alternative[\w]+\:[\w]* +matches at least one character from the set below:
\wany word character
\:the literal : (5810 / 728 / 3A16)
3rd Alternative — matches an empty string
2nd Alternative(?:[\w]+\:[\w]*|<[^>]+>) \s+any whitespace character, repeated at least once
Group 9([\w]+\:[\w]*|<[^>]+>) \s+any whitespace character, repeated at least once
\.the literal . (4610 / 568 / 2E16)
\s+any whitespace character, repeated at least once
\#the literal # (3510 / 438 / 2316)
\s+any whitespace character, repeated at least once
.*any character (except for line terminators), repeated any number of times
$end of line
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