Ok, I can't tell how to wire T,V,X, C, Y (off the pots)

The black wire has a core surrounded by plastic, surrounded by more metal fibres which at first I thought were just shielding.  So take the master for example, the left lug is soldered indirectly on to T via another wire and T -core is wired to the middle lug on the pot.  My question is does the left lug get wired to the metal fibres on the outside of the plastic?  I assumed this was the case but those are so fragile that I have few fibres left when I take off the outside rubber layer with my wire strippers. 

Anyways, if someone can clue me into how I am supposed to do this part it would be appreciated.  I am also wondering what happens at the other end.  T attaches to the effects loop socket but I can't tell what the --T--O--  symbolism means at that end. 

Ok, so it is shielding.  So I just have to verify about the wiring.  In the case of the master pot.  Is the left tab being connected to the shielding as a ground?