^start of line
.+?any character (except for line terminators), repeated at least once
\|the literal | (12410 / 1748 / 7C16)
.*any character (except for line terminators), repeated any number of times
Negated Character Class[^ ] the literal (3210 / 408 / 2016)
\Kresets the starting point of the reported match. Any previously consumed characters are no longer included in the final match
*the literal (3210 / 408 / 2016) , repeated any number of times
\r?optionally matches a carriage return (ASCII 13)
\na line-feed (newline) character (ASCII 10)
\1the text saved by group 1
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