The Magic of Indexing
When you search by a field, the computer will "look" only in that field when it looks through all the records in the database. It will try to match your search term.
|For example, an|
|Author Search looks only in the author field -->|
|Title Search looks only in the title field -->|
|Subject Search looks in the subject heading field -->|
|Date Search looks only in the date field -->|
|But . . . a Keyword Search looks for items anywhere in the record. It is the broadest search.|