(?s)applies the following effective flags to the remainder of the pattern: s s modifier: single line. Allows a dot to match line terminators
<prethe literal text <pre (case sensitive) Negated Character Class[^<]* *matches any number of characters outside the set below:
<the literal < (6010 / 748 / 3C16)
>the literal > (6210 / 768 / 3E16)
.*?any character, repeated any number of times
<the literal < (6010 / 748 / 3C16)
\/the literal / (4710 / 578 / 2F16)
pre>the literal text pre> (case sensitive) (*SKIP)acts like (*PRUNE), but the next unanchored match attempt starts where (*SKIP) was reached instead of at the next subject character
(*F)forces the current match attempt to fail at this position