.*any character (except for line terminators), repeated any number of times
:the literal : (5810 / 728 / 3A16)
(?s)applies the following effective flags to the remainder of the pattern: s s modifier: single line. Allows a dot to match line terminators
.*?any character, repeated any number of times
Positive Lookahead(?=\bAnd\b|$) \ban ASCII word boundary
Andthe literal text And (case sensitive) \ban ASCII word boundary
$end of string, or before its final line terminator