Concatenates the transformations ti and sets the result as the current transformation matrix for 2D texture coordinates. 2D texture coordinates can be created by nurbs surfaces and polygons but not by surfaces created with marching cube (these don't have a parametrization).
Transformations for texture coordinates don't accumulate when the scene graph is traverted, this means this matrix overwrites any previously set matrix.
The TEX2TRANSFORMS group is a attribute, this means it is only allowed to be present in a ATTRIBS (6.2.1), LOCAL_ATTR (6.2.2) or OVWRT_ATTR (6.2.3) attribute group, and the same override rules as for other attribute nodes apply to it.
The ti must be transformation type nodes.