^start of line
\D*any character that is not a Unicode decimal digit, repeated any number of times
0*the literal 0 (4810 / 608 / 3016) , repeated any number of times
\d+a Unicode decimal digit, repeated at least once
.*any Unicode 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