<athe literal text <a (case insensitive) \s+any whitespace character, repeated at least once
id="the literal text id=" (case insensitive) Negated Character Class[^"]* *matches any number of characters outside the set below:
"the literal " (3410 / 428 / 2216)
"the literal " (3410 / 428 / 2216)
Negated Character Class[^\/] \/the literal / (4710 / 578 / 2F16)
\/the literal / (4710 / 578 / 2F16)
>the literal > (6210 / 768 / 3E16)
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
i modifier: insensitive. Matches without distinguishing uppercase and lowercase letters