VEX Instancing and Copying Attributes

p@orient                    // Orientation of the copy.
f@pscale                    // Uniform scale.
v@scale                     // Non-uniform scale.
v@N                         // Normal (+Z axis of the copy, if no p@orient).
v@up                        // Up vector of the copy (+Y axis of the copy, if no p@orient).
v@v                         // Velocity of the copy (motion blur), used as +Z axis if no p@orient or v@N.
p@rot                       // Additional rotation (applied after the orientation attributes above).
v@P                         // Translation of the copy.
v@trans                     // Translation of the copy, in addition to v@P.
v@pivot                     // Local pivot point for the copy.
3@transform or 4@transform  // Transform matrix overriding everything except v@P, v@pivot, and v@trans.
s@shop_materialpath         // The instanced object uses this material.
s@material_override         // A serialized Python dictionary mapping material parameter names to values.
s@instance
s@instancefile              // File path indicating what geometry to instance.
s@instancepath              // Geometry to instance. This is either a path to a file on disk or an op: path.