

CFlow is effectively unused since 0.5. Only Add and Update are called. Neither Get nor DbgRender are used, making these calculations effectively useless. The related config var is commented out
//MACRO_CONFIG_INT(ClFlow, cl_flow, 0, 0, 1, CFGFLAG_CLIENT|CFGFLAG_SAVE, ""). Even then only being



ClipEnable pushes a clip region on the stack, intersected with the previous clip.
ClipDisable pops a clip region of the stack and restores the previous clip.
io to IO.