+ LyX was tested against RCS 5.7/5.8
+\begin_inset Foot
+status open
+
+\begin_layout Plain Layout
+Note that old DOS / MS Windows builds (5.7) need to setup environment variables
+ in order to work properly with LyX.
+ In particular time zone (TZ) should be set and more importantly RCSINIT
+ in order to change default archive location ("SET RCSINIT=-x,v/") --- LyX
+ expects archive to be found in file.lyx,v within the original document directory.
+ See also README shipped with Windows RCS binaries.
+\end_layout
+
+\end_inset
+
+.