\[the literal [ (9110 / 1338 / 5B16)
Linkthe literal text Link (case sensitive) \]the literal ] (9310 / 1358 / 5D16)
\sany whitespace character
\w+any word character, repeated at least once
\.the literal . (4610 / 568 / 2E16)
pdfthe literal text pdf (case sensitive) \sany whitespace character
g modifier: global. Finds all matches instead of stopping after the first