(?mi)applies the following effective flags to the remainder of the pattern: gumi m modifier: multiline. Causes ^ and $ to match the start and end of each line, not only the start and end of the string
i modifier: insensitive. Matches without distinguishing uppercase and lowercase letters
^start of line
\d+a Unicode decimal digit, repeated at least once
.+any Unicode character (except for line terminators), repeated at least once
\d{4}a Unicode decimal digit, repeated exactly 4 times
-the literal - (4510 / 558 / 2D16)
\d{2}a Unicode decimal digit, repeated exactly 2 times
-the literal - (4510 / 558 / 2D16)
\d{2}a Unicode decimal digit, repeated exactly 2 times
,the literal , (4410 / 548 / 2C16)
\h+any horizontal whitespace character, repeated at least once
\d{1,2}a Unicode decimal digit, repeated between 1 and 2 times
:the literal : (5810 / 728 / 3A16)
\d{1,2}a Unicode decimal digit, repeated between 1 and 2 times
:the literal : (5810 / 728 / 3A16)
\d{1,2}a Unicode decimal digit, repeated between 1 and 2 times
\h+any horizontal whitespace character, repeated at least once
.+any Unicode character (except for line terminators), repeated at least once
g modifier: global. Finds all matches instead of stopping after the first
u modifier: unicode. Treats the pattern and subject as UTF-16