Render Detection Settings Questions

I am using version Windows 64 bit 2.79b, or 2.79b experimental.

-If I am modelling some kind of 3D solid, with a material for its surface(s),
I am aware that there is a setting to turn off internal, non-observable face(s).
Where is the setting to do disable this interior, or non camera side, rendering
detection, when rendering with Cycles?

-I am doing an Animation model with keyframes. One that is very
reliant on FreeStyle Line Edges. Is there a way with version 2.79b that I
can have freestyle line edges render detected from one side of a surface,
but not another, with no regard to whether the surface side is visible, camera
side, or not?

Plane

-Has the entire domain of FreeStyle Line Edge detection been improved,
between versions Blender versions 2.79b, the experimental version,
and 3.3.1? Can freestyle edges, dimensionally behind other objects,
in relation to the camera object, automatically get excluded, and/or
then partly included, by default or via settings, as the edge emerges
into camera visibility or depart from it, for Cycles Rendering and
Animation Rendering?