the differences between stretching the ligs and the tunica(?)

can someone please help me to understand the differences between the tunica streches and the lig stretches, and what are they to begin with.
and I also understood there is a third kind of stretching, when you pull your penis by the base?


thanks!

another question,what is the science behind the Rotary Stretches?

Ligs get stretched on straight down angles, while tunica strethces are mostly you pulling up or hanging weights pulling up

http://www.peyronies-disease-help.com/wp-content/uploads/Penis-anatomy-detail.jpg

Here is a link to anatomy of penis my friend study it then look on this forum, What lot theory is, Tonight i Just figured my lot out with a simple instruction on another forum. The Lot theory will help you determine where you can attain faster gains in the penis either in your tunica or in your ligaments