Spin Semiconductor

Hello,
I'm thinking about function of the T1 pin. Frank once said that pulling this pin high will damage the chip. However, I'm interested in its function, what was it used for eg. in the production process?

Anybody knows something?

Frank mentioned before that the T1 pin was used in production process and has no function for the end user IIRC.

I know, but what exactly was it used for? I'm asking out of curiosity.

Everything that will be said about the pin has already been said.