4. Find by whole expression This mode is the most discriminating of The Archivist. The research is operated on a word or an expression identical to what you typed in the Look for dialog. For example, if you are looking for "CD-ROM” the expressions “CD ROM” and “CD/ROM” will not match. Consequently you must type exactly the write string or use another mode. In the example, it would have been preferable to use the “Look for characters” mode.