^start of line
\[the literal [ (9110 / 1338 / 5B16)
\d{2}a Unicode decimal digit, repeated exactly 2 times
the literal (3210 / 408 / 2016)
A-Zone character from A (6510) to Z (9010) (case sensitive)
{2}matches exactly 2 characters from the set below:
a-zone character from a (9710) to z (12210) (case sensitive)
the literal (3210 / 408 / 2016)
\d{4}a Unicode decimal digit, repeated exactly 4 times
\]the literal ] (9310 / 1358 / 5D16)
\s*a Unicode whitespace character, repeated any number of times
Group 4(DSA-\d+(?:-\d+)?) DSA-the literal text DSA- (case sensitive) \d+a Unicode decimal digit, repeated at least once
Non-Capturing Group(?:-\d+)? ?repeats the group contents below at most once:
-the literal - (4510 / 558 / 2D16)
\d+a Unicode decimal digit, repeated at least once
\s+a Unicode whitespace character, repeated at least once
Group 5([^\s-]+(?:-[^\s-]+)*) Negated Character Class[^\s-]+ +matches at least one character outside the set below:
\sa Unicode whitespace character
-the literal - (4510 / 558 / 2D16)
Non-Capturing Group(?:-[^\s-]+)* *repeats the group contents below any number of times:
-the literal - (4510 / 558 / 2D16)
Negated Character Class[^\s-]+ +matches at least one character outside the set below:
\sa Unicode whitespace character
-the literal - (4510 / 558 / 2D16)
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