What Is Elektra's Silent Scream?

What is it and what does it do i've been wondering this for a while now can someone please let me know

Bump

 from an Elektra Respect Thread

Elektra uses the silent scream, a chi based high powered scream ala Black Canary.
http://i593.photobucket.com/albums/tt14/elektrarespectthread/th_13-Page11.jpg

Shang-chi doing the Silent Scream for comparison

http://img.photobucket.com/albums/v207/sinister_samurai/th_MarvelComicsPresents158b-16.jpg 
http://img.photobucket.com/albums/v207/sinister_samurai/th_MarvelComicsPresents158b-17.jpg 
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Chi is a martial arts based concept of channeling life force for spectacular effects ala DBZ