Each search option on your site, with the exception of Random Images, has a customizable field for "Help Text". These fields are designed as a place where you can provide instructions for how to most efficiently search your collection.
The default Help text for Keyword Search, Advanced Search, Objects,
Photos, Archives and Library is, Search
Hints: To search by phrase wrap
your criteria in quotes. ex: "Find me". The default text
for Search by Term is, Search
Hints: Start your search by clicking
a letter. Entering custom text into the Help Text fields in IMS
will overwrite this default text.