User's Manual Part 1

6 Scanner Support—Chapter
143700 Series Color Mobile Computer User’s Manual
Filter Expression Values (continued)
ExampleMeaningOperator
{min,max} A repetition operator like + or *, ex-
cept the number of repetitions is spe-
cified by min and max.
[a-z]{1,3} matches a, ab, or aab, but
not aabc
(expr1)|(expr2) Matches expr1 or expr2. a|b matches a or b
(subexpression) Grouping operator to consolidate
terms into a subexpression, which
can override the order of evaluation.
The subexpression is available for lat-
er matching or editing by means of
\index,where\index is between 1-9
and refers to the index-th group in
the string, counting from left to
right. \0 refers to the whole expres-
sion.
Overriding evaluation order: (ab)*c
matches c, abc, ababc, etc.
Back-referencing: (aa)bb\1 matches
aabbaa.