X-Git-Url: https://jxself.org/git/?p=ibg.git;a=blobdiff_plain;f=appendices%2Fe.rst;fp=appendices%2Fe.rst;h=3f48f9e41d8c4c38f2696868ce82ab72f6ec032b;hp=31d81bd85048963d44c9155e282ac53643c9061e;hb=4381288eeb792adb3672ef747013c02815fa760a;hpb=4261ff48a6357e2af0957f5e1b88bdc022243d16

diff --git a/appendices/e.rst b/appendices/e.rst
index 31d81bd..3f48f9e 100644
--- a/appendices/e.rst
+++ b/appendices/e.rst
@@ -68,9 +68,16 @@ to zero:
   | `Constant {const_id}`;
   | `Constant {const_id} = {expr}`;
 
-Standard constants are `true` (1), `false` (0) and `nothing` (0), also
-`NULL` (-1).  Additionally, `WORDSIZE` is the number of bytes in a storage
-word: 2 for the Z-machine, 4 for Glulx.
+.. Generated by autoindex
+.. index::
+   pair: NULL; library constant
+   pair: false; library constant
+   pair: nothing; library constant
+   pair: true; library constant
+
+Standard constants are :const:`true` (1), :const:`false` (0) and
+:const:`nothing` (0), also :const:`NULL` (-1).  Additionally, `WORDSIZE` is
+the number of bytes in a storage word: 2 for the Z-machine, 4 for Glulx.
 
 To define a constant (unless it already exists):