A help family includes one or more help volumes. You can select and view individual help volumes from Help Manager. The Help Manager window contains an additional navigation button called Top Level. After browsing different help volumes, you can use Top Level to return to the Help Manager's main screen. Character Meaning &sigspace;. (period) Matches any character &sigspace;* (asterisk) Matches 0 or more of the preceding character &sigspace;? (question mark)&sigspace; Matches 0 or 1 of the preceding character &sigspace;| (vertical bar) Specifies two search patterns and matches either pattern (logical OR) &sigspace;() (parantheses) Encloses a pattern expression To search for a character that has special meaning in a regular expression precede the character with a &newline; (backslash). &sigspace; This expression finds index entries that contain the word "mouse" followed by any number of characters followed by "clicking". mouse.*clicking This expression finds index entries that contain the word "mouse" or "click". mouse | click This example finds index entries that contain "Session Manager" or "Style Manager". (session | style).*manager For more information about regular expressions, refer to the regexp(5) man page