SEARCHDEFAULTTTYPE -- default type for search

Default type for search, one of: keyword (for search engine like syntax), regex (for RegularExpression search), or literal (for verbatim search). Note that the variable name has three consecutive 'T'. This is a typo and ought to be fixed, but at the moment that is the name the code is using and maybe a couple of installations have been using it for customisation.

• Type: Preference variable defined in TWiki.TWikiPreferences. Can be customized for a TWiki site in Main.TWikiPreferences, and for each web in their WebPreferences topics.
• Current value: SEARCHDEFAULTTTYPE = keyword