tgt

An export target:

Syntax	Description
pos{0..4}	Copy vertex position 0..4.
param{0..31}	Copy vertex parameter 0..31.
mrt{0..7}	Copy pixel color to the MRTs 0..7.
mrtz	Copy pixel depth (Z) data.
prim	Copy primitive (connectivity) data.
null	Copy nothing.

Examples:

exp pos3 v1, v2, v3, v4
exp mrt0 v1, v2, v3, v4