doc/syslinux.txt: Specify that CONFIG can change working directory

diff --git a/doc/syslinux.txt b/doc/syslinux.txt
index 5b27a6e..35eacd4 100644 (file)
--- a/doc/syslinux.txt
+++ b/doc/syslinux.txt
@@ -233,7 +233,8 @@ LABEL label
        filetype, regardless of the filename.
 
        CONFIG means restart the boot loader using a different
-       configuration file.
+       configuration file.  Optionally, a new working directory may be
+       specified in an APPEND.
 
     APPEND -
         Append nothing.  APPEND with a single hyphen as argument in a