\s*a Unicode whitespace character, repeated any number of times
-+the literal - (4510 / 558 / 2D16) , repeated at least once
Page the literal text Page (case sensitive) \d+a Unicode decimal digit, repeated at least once
-+the literal - (4510 / 558 / 2D16) , repeated at least once
\na line-feed (newline) character (ASCII 10)
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