diff --git a/web/CXM_making_a_web_site.anubis b/web/CXM_making_a_web_site.anubis
index 6f02584..ce90cb5 100644
--- a/web/CXM_making_a_web_site.anubis
+++ b/web/CXM_making_a_web_site.anubis
@@ -1040,9 +1040,47 @@ public type TextAreaOption:
 public type CSS_Style:
    text_options(List(Text_Option)). 
 
+public type CSS_File_Media:
+  screen,     //Intended for non-paged computer screens.
+  tty,        //Intended for media using a fixed-pitch character grid, such as teletypes, terminals, or portable devices with limited display capabilities.
+  tv,         //Intended for television-type devices (low resolution, color, limited scrollability).
+  projection, //Intended for projectors.
+  handheld,   //Intended for handheld devices (small screen, monochrome, bitmapped graphics, limited bandwidth).
+  print,      //Intended for paged, opaque material and for documents viewed on screen in print preview mode.
+  braille,    //Intended for braille tactile feedback devices.
+  aural,      //Intended for speech synthesizers.
+  all.        //Suitable for all devices.
+
+public define String
+  to_String
+  (
+    CSS_File_Media css_file_media
+  )=
+  if css_file_media is
+  {
+    screen      then  "screen",
+    tty         then  "tty",
+    tv          then  "tv",
+    projection  then  "projection",
+    handheld    then  "handheld",
+    print       then  "print",
+    braille     then  "braille",
+    aural       then  "aural",
+    all         then  "all"      
+  }.
+  
+
+  .
 public type CSS_File:
-   css_file(String file_name).
+   css_file(String file_name, CSS_File_Media).
 
+public define CSS_File
+  css_file
+  (
+    String file_name
+  )=
+  css_file(file_name, all).
+  
 public type JS_Attribute:
   attr      (String, String).
   
@@ -3927,17 +3965,18 @@ define Printable_tree
      }.
      
 define Printable_tree
-   add_css_files
-     (
-       List(CSS_File)   l
-     ) =
-   if l is 
-     {
-       [ ] then [ ], 
-       [h . t] then 
-       [ ["<link rel=\"stylesheet\" type=\"text/css\" href=\"" + file_name(h) + "\" />\n" ]
+  add_css_files
+  (
+    List(CSS_File)   l
+  ) =
+  if l is 
+  {
+    [ ]     then [ ], 
+    [h . t] then 
+      since h is css_file(file_name, media),
+       [ ["<link rel=\"stylesheet\" type=\"text/css\" href=\"" + file_name + "\" media=\""+to_String(media)+"\"/>\n" ]
          . add_css_files(t)]
-     }.
+  }.
 
 define Printable_tree
    add_js_files_attributes
--
libgit2 0.21.4