^start of line
\[the literal [ (9110 / 1338 / 5B16)
STARTthe literal text START (case sensitive) \]the literal ] (9310 / 1358 / 5D16)
clientthe literal text client (case sensitive) \.the literal . (4610 / 568 / 2E16)
\w+any word character, repeated at least once
\na line-feed (newline) character (ASCII 10)
.*any character (except for line terminators), repeated any number of times
\na line-feed (newline) character (ASCII 10)
\[the literal [ (9110 / 1338 / 5B16)
ENDthe literal text END (case sensitive) \]the literal ] (9310 / 1358 / 5D16)
clientthe literal text client (case sensitive) \.the literal . (4610 / 568 / 2E16)
\w+any word character, 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