\d+a digit, repeated at least once
\sany whitespace character
\d+a digit, repeated at least once
\sany whitespace character
.*?any character (except for line terminators), repeated any number of times
\sany whitespace character
\d{1,2}a digit, repeated between 1 and 2 times
,the literal , (4410 / 548 / 2C16)
\sany whitespace character
\d{4}a digit, repeated exactly 4 times
\.the literal . (4610 / 568 / 2E16)
pdfthe literal text pdf (case sensitive) $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