^start of line
-{27}the literal - (4510 / 558 / 2D16) , repeated exactly 27 times
\w+any word character, repeated at least once
-+the literal - (4510 / 558 / 2D16) , repeated at least once
$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