\+the literal + (4310 / 538 / 2B16)
1the literal 1 (4910 / 618 / 3116)
\s*any whitespace character, repeated any number of times
{3}matches exactly 3 characters from the set below:
0-9one character from 0 (4810) to 9 (5710)
\s*any whitespace character, repeated any number of times
-the literal - (4510 / 558 / 2D16)
\s*any whitespace character, repeated any number of times
{3}matches exactly 3 characters from the set below:
0-9one character from 0 (4810) to 9 (5710)
\s*any whitespace character, repeated any number of times
-the literal - (4510 / 558 / 2D16)
\s*any whitespace character, repeated any number of times
{4}matches exactly 4 characters from the set below:
0-9one character from 0 (4810) to 9 (5710)
\ban ASCII word boundary
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