Add note that the various \see* macros are only defined in the context
of a seealso environment.
diff --git a/Doc/doc/doc.tex b/Doc/doc/doc.tex
index 449bb8b..12beaa9 100644
--- a/Doc/doc/doc.tex
+++ b/Doc/doc/doc.tex
@@ -808,6 +808,9 @@
starts with an identifier, which should not be modified), and
ending with the apropriate punctuation.
+ These macros are only defined within the content of the
+ \env{seealso} environment.
+
\begin{macrodesc}{seemodule}{\op{key}\p{name}\p{why}}
Refer to another module. \var{why} should be a brief
explanation of why the reference may be interesting. The module