\ban ASCII word boundary
z?optionally matches the literal z (12210 / 1728 / 7A16) (case sensitive)
Negated Character Class[^\Wz] \Wany non-word character
zthe literal z (12210 / 1728 / 7A16) (case sensitive)
\w*?any word character, repeated any number of times
zzthe literal text zz (case sensitive) \w*any word character, repeated any number of times
Negated Character Class[^\Wz] \Wany non-word character
zthe literal z (12210 / 1728 / 7A16) (case sensitive)
z?optionally matches the literal z (12210 / 1728 / 7A16) (case sensitive)
\ban ASCII word boundary
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