diff --git a/racket/src/ChezScheme/BUILDING b/racket/src/ChezScheme/BUILDING
index 0ae6505ab4..e1491dd470 100644
--- a/racket/src/ChezScheme/BUILDING
+++ b/racket/src/ChezScheme/BUILDING
@@ -180,13 +180,16 @@ The makefile supports several targets:
 
  * `sudo make install`
 
-   Installs the biult executables, boot files, example files, and
-   manual pages.
+   Installs the built executables, boot files, example files, and
+   manual pages. If the `--installprefix` used with "configure" is
+   writable by the current user, then `sudo` is not necessary.
 
  * `sudo make uninstall`
 
    Uninstalls the executables, boot files, example files, and manual
-   pages.
+   pages. As with `make install`, if the `--installprefix` used with
+   "configure" is writable by the current user, then `sudo` is not
+   necessary.
 
  * `make test`
 
@@ -237,13 +240,40 @@ The makefile supports several targets:
    represented in "boot", simply add the appropriate subdirectory as
    empty or use `make <machine type>.boot` first.
 
+ * `make docs`
+
+   Runs the build plus generates HTML and PDF versions of the Chez
+   Scheme Users Guide and the release notes. Unlike the other build
+   targets, the documentation is not built in the workarea, but rather
+   in the "csug" and "release_notes" directories (where "configure" is
+   run).
+
+   Building the documentation requires a few prerequisites not required
+   to build the rest of Chez Scheme.  The following must be available
+   in your PATH:
+
+    * A TeX distribution (including latex, pdflatex, dvips, and gs)
+
+    * ppmtogif and pnmcrop (from Netpbm)
+
+   An X11 installation is not required, but ppmtogif does require an
+   "rgb.txt" file, which it will automatically locate in the common
+   X11 installation locations. If ppmtogif fails because it cannot
+   find an "rgb.txt" file, you can use the `RGBDEF` environment
+   variable to specify the path to a file. If your system has an Emacs
+   installation, then you can find an "rgb.txt" file in the "etc"
+   directory of the emacs installation. If your system has a Vim
+   installation, then it might contain an "rgb.txt" in the directory
+   identified by the `VIMRUNTIME` environment variable.
+
  * `make clean`
 
    Removes binaries from the workarea.
 
  * `make distclean`
    
-    Removes "nanopass", "Makefile", and all workareas.
+    Removes "nanopass", "Makefile", built documentation, and all
+    workareas.
 
 
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