--- ray/src/cv/mgflib/spec.txt 1994/07/01 18:07:02 1.3 +++ ray/src/cv/mgflib/spec.txt 1994/07/11 14:47:09 1.4 @@ -144,11 +144,12 @@ Rotations are given in degrees counter-clockwise about That is, with the thumb of the right hand pointing in the direction of the axis, rotation follows the curl of the fingers. -The transform command itself is also cumulative, and a transform -command with no arguments is used to return to the previous -condition. It is necessary that transforms and their end statements -("xf" by itself) be balanced in a file, so that later or enclosing -files are not affected. +The transform command itself is also cumulative, but in the reverse +order. That is, later transformations (i.e. enclosed transformations) +are prepended to existing (i.e. enclosing) ones. A transform command +with no arguments is used to return to the previous condition. It is +necessary that transforms and their end statements ("xf" by itself) be +balanced in a file, so that later or enclosing files are not affected. Transformations apply only to geometric types, e.g. polygons, spheres, etc. Vertices and the components that go into geometry are not directly affected.