^start of line
1-9one character from 1 (4910) to 9 (5710)
\d{0,2}a Unicode decimal digit, repeated between 0 and 2 times
*repeats the group contents below any number of times:
\.the literal . (4610 / 568 / 2E16)
\d{3}a Unicode decimal digit, repeated exactly 3 times
,the literal , (4410 / 548 / 2C16)
\d{2}a Unicode decimal digit, repeated exactly 2 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