When searching for something, often the object found is in a filed amongst
thousands of others. Relevent information is often along side the entire row.
It is easier to scroll and view what you will from the entire row, if
highlighted.

A tickbox in the search window should allow for either the entire row,
column, both or neither to be highlighted (and choice of colour).

Like searching in the Mozilla browser, the word is highlighted, often
inverted.