apropos

?apropos <term> [<term> ...]

Searches all available online docs for the terms passed. Terms are separated by white space. Each term is tested independently and all terms have to match. Testing is done either by simple sub-string search, or, if the term looks like a regular expression (Perl style), by regex matching. In case a regex-like term cannot be parsed as regular expression, it is used in normal sub-string search mode.

Note: Fancy quoting with single and double quotes might lead to unexpected problems.

Example

CafeOBJ> ?ap prec oper

will search for all entries that contain both prec and oper as sub-strings. Matching is done as simple sub-string match.

CafeOBJ> ?ap foo att[er]

will search for entries that contain the string foo as well as either the string atte or attr.