Is there an easier way of cross-fading tracks?

Ideally, I’d like to be able to select a portion from two tracks and have Audacity automatically apply a cross-fade and trim the track based on that selection. Is the program capable of doing this?

Crossfade Tracks: http://manual.audacityteam.org/o/man/crossfade_tracks.html
Crossfade Clips: http://manual.audacityteam.org/o/man/crossfade_clips.html
Trim Audio: http://manual.audacityteam.org/o/man/edit_menu_remove_special.html#trim

(Other effect included in Audacity: http://manual.audacityteam.org/o/man/index_of_effects_generators_and_analyzers.html)