Typing somthing into the Search box searches through the Names of all the entries in the grid and any Synonyms that are in the data.

The search is dynamic; as you type the search resuts are updated with every key stroke.
The search is case insensitive.
If you have a really big library loaded it will probably take a few seconds before any results are returned.
Press the X icon to clear the search.
Below is a screen shot showing what you get if you search for "P" in the Captital Cities.msp example file.
Monaco is on the list because at least one of it's synonyms starts with P.
