-# would need to place it in $HOME/.htsnrc. On Windows, it probably
-# needs to go in %APPDATA%, or C:\Users\<username>\Application Data.
+# would need to place it in either the user or global configuration
+# directories.
+#
+# For a user, that's either $HOME/.htsnrc on Unix or
+# %APPDATA%\.htsnrc (e.g. C:\Users\<username>\Application
+# Data\.htsnrc) on Windows.
+#
+# The global configuration directory is determined by Cabal. The
+# "sysconfdir" parameter during the "configure" step will be used. On
+# Unix, it's probably /etc, and this file will need to go in
+# /etc/htsnrc.