{3,}matches at least 3 characters from the set below:
\sany whitespace character
\d{1,}a digit, repeated at least once
\\the literal \ (9210 / 1348 / 5C16)
nthe literal n (11010 / 1568 / 6E16) (case sensitive)
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