Clarify info about MS-DOS path handling.

diff --git a/INSTALL b/INSTALL
index 2a009f8db7defa80da5920c103c6a2d0d5506aa2..49c5679117a3f0ee1dbed7495d136ad1e05931ef 100644 (file)
--- a/INSTALL
+++ b/INSTALL
@@ -538,7 +538,13 @@ problem too late to include a more convenient fix--sorry.
 To save disk space, Emacs is built with the idea that you will execute
 it from the same place in the file system where you built it.  As the
 /usr/local/ subtree does not exist on most MSDOG systems, the
-executables are placed in /emacs/bin/.
+executables might be placed in /emacs/bin/, for instance, in which
+case there should also be /emacs/lisp, /emacs/info and /emacs/etc
+directories.  In general, with the default path handling, the etc/,
+info/ and lisp/ directories are expected to exist in ../ relative to
+the directory containing the executing binary.  This behaviour can be
+overridden by setting the HOME environment variable to the directory
+containing lisp/ etc.
 
 MSDOG is a not a multitasking operating system, so Emacs features such
 as asynchronous subprocesses that depend on multitasking will not