Auto-search mode depends on the number of characters entered:
- up to 3 charactes: "match from start" unless RETURN or SEARCH is pressed
- over 3 characters: "match anywhere" unless first character is ^.
Pressing RETURN or SEARCH forces "match anywhere" search mode.
Entering ^ as the first character forces "match from start" for any number of characters.
You can use an asterisk (*) as a wild card anywhere in the search string.