That's nice in that it's relatively simple and clears Name matching:, Containing text:, and probably other desirable things, but I don't like that it resets Show results in: source(new tab), so I'll stick with what I was using before.
Before anybody asks, what I was using before is
%Bat%\Directory_Opus_Clear_Find.ahk {alias|dopuslocaldata|noterm}
Set UTILITY=Find,Toggle
See Clear the find fields before searching for more files for information about Directory_Opus_Clear_Find.ahk, the name of which I apparently changed.