Double-click On Line Action: The four choices in the drop down list () determines the response to a double click on a search hit line in the Search Results list. The choices are:
View Context (default): The Internal Context viewer is opened.
Open With Associated Viewer: The editor/view associated with the filetype according to your windows installation is used.
Open with Default Viewer: The editor/viewer specified in the If no association use field is used.
File Operations: The File Operations dialog is displayed.