1ESC-B(1)                    General Commands Manual                   ESC-B(1)
2
3NNAAMMEE
4     eesscc--BB - the roff escape B sequence: validate numerical expression
5
6DDEESSCCRRIIPPTTIIOONN
7     empty: 0
8     digit: 1
9     no number: 0
10     trailing garbage: 0
11     trailing operator: 0
12     infix operator: 1
13     infix and trailing operator: 0
14     chain of operations: 1
15     trailing para: 0
16     unclosed para: 0
17     empty pair of parentheses: 0
18     parentheses containing number: 1
19     complex expression: 1
20     other delimiter: 1
21     no closing delimiter: 0
22
23OpenBSD                          July 4, 2017                          OpenBSD
24