Commands Insight toolbar is new feature for allowing quick access to all commands in EZTitles via contextual search of the typed in phrase or word. Searched phrases are compared to both commands' names and their respective descriptions.
The commands insight toolbar can be accessed by pressing the "lamp" looking button 
at the upper right corner of the EZTitles' window. After that search bar will appear where you can type in the phrase you wish to search for:
Results matching the searched phrase will be displayed in a list below the search bar sorted according to their relevance to the searched phrase. Short description of the what each of the commands in the list do as well as their respective shortcuts will be displayed too. After that, a command from the list can be invoked by either clicking on it with the mouse or by using the respective shortcut key combination.
Some of the commands, like Row End on the above image, may appear grayed out. Grayed out commands cannot be executed at the moment because they could be either disabled in the current Mode (Teletext, Closed Captions, etc), or they don't apply to the selected from the GUI element. For example, Row End can be executed only if subtitle in the main editor is selected. Trying to invoke Row End when the preview list or timeline are on focus will not do anything.