\ban ASCII word boundary
latthe literal text lat (case sensitive) \s*any whitespace character, repeated any number of times
=the literal = (6110 / 758 / 3D16)
\s*any whitespace character, repeated any number of times
?matches at most one character from the set below:
"the literal " (3410 / 428 / 2216)
'the literal ' (3910 / 478 / 2716)
\s*any whitespace character, repeated any number of times
\ban ASCII word boundary
+matches at least one character from the set below:
\da digit
.the literal . (4610 / 568 / 2E16)