diff --git a/Docs/src/basic.but b/Docs/src/basic.but
index 9948a210..d76b8f47 100644
--- a/Docs/src/basic.but
+++ b/Docs/src/basic.but
@@ -97,6 +97,17 @@ Remove the specified directory (which should be a full path). Without /r, the di
 \c RMDir /r /REBOOTOK $INSTIDR
 \c RMDir /REBOOTOK $INSTDIR\DLLs
 
+Note that the current working directory can not be deleted. The current working directory is set by \R{setoutpath}{SetOutPath}. For example, the following example will not delete the directory.
+
+\c SetOutPath $TEMP\dir
+\c RMDir $TEMP\dir
+
+The next example will succeed in deleting the directory.
+
+\c SetOutPath $TEMP\dir
+\c SetOutPath $TEMP
+\c RMDir $TEMP\dir
+
 \S2{setoutpath} SetOutPath
 
 \c outpath