^start of line
"need"the literal text "need" (case sensitive) \s*any whitespace character, repeated any number of times
:the literal : (5810 / 728 / 3A16)
\s*any whitespace character, repeated any number of times
{"A":"the literal text {"A":" (case sensitive) \w+any word character, repeated at least once
","B":"the literal text ","B":" (case sensitive) \w+any word character, repeated at least once
","C":"the literal text ","C":" (case sensitive) \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