update list of supported os-es
diff --git a/Doc/ref.tex b/Doc/ref.tex
index a61c2de..e63fa7c 100644
--- a/Doc/ref.tex
+++ b/Doc/ref.tex
@@ -31,8 +31,8 @@
window managers.
Python is available for various operating systems, amongst which
-several flavors of {\UNIX}, Amoeba, the Apple Macintosh O.S.,
-and MS-DOS.
+several flavors of {\UNIX} (including Linux), the Apple Macintosh O.S.,
+MS-DOS, MS-Windows 3.1, Windows NT, and OS/2.
This reference manual describes the syntax and ``core semantics'' of
the language. It is terse, but attempts to be exact and complete.
diff --git a/Doc/ref/ref.tex b/Doc/ref/ref.tex
index a61c2de..e63fa7c 100644
--- a/Doc/ref/ref.tex
+++ b/Doc/ref/ref.tex
@@ -31,8 +31,8 @@
window managers.
Python is available for various operating systems, amongst which
-several flavors of {\UNIX}, Amoeba, the Apple Macintosh O.S.,
-and MS-DOS.
+several flavors of {\UNIX} (including Linux), the Apple Macintosh O.S.,
+MS-DOS, MS-Windows 3.1, Windows NT, and OS/2.
This reference manual describes the syntax and ``core semantics'' of
the language. It is terse, but attempts to be exact and complete.