* README: Document all the top-level directories. (Bug#29558)

1 files changed, 6 insertions, 0 deletions

diff --git a/README b/README
index 81e2a518473..9fba02d7c4d 100644
--- a/README
+++ b/README
@@ -72,6 +72,8 @@ There are several subdirectories:
 'lib'       holds source code for libraries used by Emacs and its utilities
 'lib-src'   holds the source code for some utility programs for use by or
             with Emacs, like movemail and etags.
+'lwlib'     holds the sources of the Lucid Widget Library used on X.
+'oldXMenu'  source files from X11R2 XMenu library, used in non-toolkit builds.
 'etc'       holds miscellaneous architecture-independent data files Emacs
             uses, like the tutorial text and tool bar images.
             The contents of the 'lisp', 'leim', 'info', and 'doc'
@@ -89,6 +91,10 @@ There are several subdirectories:
             Nextstep port of Emacs, for GNUstep and macOS Cocoa.
 'nt'        holds code and documentation for building Emacs on MS-Windows.
 'test'      holds tests for various aspects of Emacs's functionality.
+'modules'   holds the modhelp.py helper script.
+'admin'     holds files used by Emacs developers, and Unicode data files.
+'build-aux' holds auxiliary files used during the build.
+'m4'        holds Autoconf macros used for generating the configure script.
 
    Building Emacs on non-Posix platforms requires tools that aren't part
 of the standard distribution of the OS.  The platform-specific README