Now let's try a search for sharks. Remember that the computer only matches letters so if you want to find all of the entries with sharks, you need to use OR so that you get both the singular and plural form of the word.
shark OR sharks

When you do this search in POWER, you find 59 entries; there were only 45 when you did the Basic search so OR broadened your search and gave you more results.
Try it! SEARCH
Another way to get both the singular
and the plural of
a word is to use a truncation symbol
*.
The computer will match only those
letters in front of the truncation
symbol.
shark* gives
you entries with both shark and sharks.