^start of line
.*any character (except for line terminators), repeated any number of times
Threethe literal text Three (case sensitive) .any character (except for line terminators)
Link respthe literal text Link resp (case sensitive) .*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