^start of line
.{24}any character (except for line terminators), repeated exactly 24 times
Realtimethe literal text Realtime (case sensitive) \[the literal [ (9110 / 1338 / 5B16)
\d{1,3}a digit, repeated between 1 and 3 times
\]the literal ] (9310 / 1358 / 5D16)
.*any character (except for line terminators), repeated any number of times
\n?optionally matches a line-feed (newline) character (ASCII 10)
m modifier: multiline. Causes ^ and $ to match the start and end of each line, not only the start and end of the string
g modifier: global. Finds all matches instead of stopping after the first