Non-Capturing Group(?:\s|^) \sany whitespace character
Non-Capturing Group(?:\\\\){0,} {0,}repeats the group contents below any number of times:
\\the literal \ (9210 / 1348 / 5C16)
\\the literal \ (9210 / 1348 / 5C16)
\Kresets the starting point of the reported match. Any previously consumed characters are no longer included in the final match
:the literal : (5810 / 728 / 3A16)
\w+any word character, repeated at least once
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