--- a/README.md	Sat Jan 30 23:37:26 2021 +0200
+++ b/README.md	Sat Jan 30 23:52:32 2021 +0200
@@ -38,4 +38,31 @@
 :   For storing connection settings, passwords and enabling modes added to
     load-path in `~/.emacs.d/.emacs-pre`. Will not be overridden on install.
 
+## Org mode conventions
 
+TODO
+
+## Legacy setup instructions for native Windows Emacs
+
+Define env var `HOME` like `c:\home`. Emacs will expand path element `~` to that
+directory and some modes provide shortcuts for quick navigation to that
+directory.
+
+### cygwin-mount.el
+
+`cygwin-mount.el` teaches Windows Emacs to understand Cygwin paths.
+
+In particular setting `INFOPATH` & `MANPATH` using Cygwin's convention allows to
+read info and man pages from Windows Emacs!
+
+Example of `INFOPATH` which works both in Cygwin and native Emacs:
+
+    INFOPATH=/cygdrive/c/home/usr/share/info:/usr/share/info:/usr/local/share/info:
+
+Final sign `:` instructs Cygwin's built-in info viewer to include system paths
+and native Emacs to include its own info pages.
+
+Emacs's `woman.el` and Cygwin's `man` both understand following:
+
+    MANPATH=:/cygdrive/c/home/usr/share/man:/usr/share/man:/usr/local/share/man
+