commit - 1a4b2922aa806fc3139f001130c16381d1eb6041
commit + 6a0171e93a716733d263fc315ac334ee137bd304
blob - 4e30e587140c8667c5b80aaefc6ec7342e822afd
blob + 5d1f014869800cbc75226e1c25e44dc949374378
--- man/man1/rio.1
+++ man/man1/rio.1
@@ -37,7 +37,7 @@ is a window manager for X which attempts to emulate th
 policies of Plan 9's 
 .I rio
 window manager.
-Rio is derived from David Hogan's \*(85.
+Rio is derived from David Hogan's 9wm.
 .PP
 The
 .B \-grey
@@ -211,3 +211,11 @@ There is a currently a compiled-in limit of 128 hidden
 .SH "SEE ALSO"
 .IR 9term (1),
 .IR xterm (1)
+.PP
+As mentioned above,
+.I rio
+is mainly maintenance updates
+applied to the original
+.I 9wm
+by David Hogan; see
+.HR http://unauthorised.org/dhog/9wm.html "" .