^start of line
.*any character, repeated any number of times
$end of line
\na line-feed (newline) character (ASCII 10)
.*any character, repeated any number of times
,the literal , (4410 / 548 / 2C16)
\sany whitespace character
.*any character, 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
s modifier: single line. Allows a dot to match line terminators