Fromthe literal text From (case sensitive) \h+any horizontal whitespace character, repeated at least once
\Kresets the starting point of the reported match. Any previously consumed characters are no longer included in the final match
\p{Lu}an uppercase letter
\p{Ll}*a lowercase letter, repeated any number of times
Non-Capturing Group(?:[\h-']\p{Lu}\p{Ll}*)* *repeats the group contents below any number of times:
\hany horizontal whitespace character
-the literal - (4510 / 558 / 2D16)
'the literal ' (3910 / 478 / 2716)
\p{Lu}an uppercase letter
\p{Ll}*a lowercase letter, repeated any number of times
g modifier: global. Finds all matches instead of stopping after the first
u modifier: unicode. Treats the pattern and subject as UTF-16