^start of line
Non-Capturing Group(?:#|//) #the literal # (3510 / 438 / 2316)
_+the literal _ (9510 / 1378 / 5F16) , repeated at least once
NOT_FOR_CUSTOMER_BEGINthe literal text NOT_FOR_CUSTOMER_BEGIN (case sensitive) _+the literal _ (9510 / 1378 / 5F16) , repeated at least once
Non-Capturing Group(?:\n.*)*? *?repeats the group contents below any number of times:
\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)
Non-Capturing Group(?:#|//) #the literal # (3510 / 438 / 2316)
_+the literal _ (9510 / 1378 / 5F16) , repeated at least once
NOT_FOR_CUSTOMER_ENDthe literal text NOT_FOR_CUSTOMER_END (case sensitive) _+the literal _ (9510 / 1378 / 5F16) , repeated at least once
\n*a line-feed (newline) character (ASCII 10), repeated any number of times
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