^start of line
.*any character (except for line terminators), repeated any number of times
\ban ASCII word boundary
\d{5}a digit, repeated exactly 5 times
\ban ASCII word boundary
.*any character (except for line terminators), 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