--- ray/doc/ray.1	2003/03/11 19:20:20	1.1
+++ ray/doc/ray.1	2003/03/14 21:27:45	1.3
@@ -129,6 +129,8 @@ by the real arguments.
 An alias gets its type and arguments from a previously defined primitive.
 This is useful when the same material is used with a different
 modifier, or as a convenient naming mechanism.
+The reserved modifier name "inherit" may be used to specificy that
+an alias will inherit its modifier from the original.
 Surfaces cannot be aliased.
 .PP
 A line beginning with an exclamation point, `!',
@@ -267,6 +269,9 @@ mod mesh id
 0
 0
 .DE
+If the modifier is "void", then surfaces will use the modifiers given
+in the original mesh description.
+Otherwise, the modifier specified is used in their place.
 The transform moves the mesh to the desired location in the scene.
 Multiple instances using the same meshfile take little extra memory,
 and the compiled mesh itself takes much less space than individual