Very minor suggestion: In the Internal Viewer, I advocate adding hints/tooltips to the two Highlight checkboxes. It's not clear to the uninitiated that these enable/disable the display of Search Result hits and local Find-in-file hits, respectively. Most other controls have hints (including all within this panel), but these checkboxes do not.
File Locator Pro: Release Build 1358 - 2013.05.28.77836