Index: manual/appendix/file_formats.tex
===================================================================
--- manual/appendix/file_formats.tex	(revision 29855)
+++ manual/appendix/file_formats.tex	(working copy)
@@ -201,4 +201,56 @@
       \fname{.cms}, \fname{.dmc}, \fname{.dlt}, \fname{.mpt},
          \fname{.mpd}                                                 & None \\
     \end{rbtabular}
+    
+    \subsection{Metadata featureset}
+    
+    Rockbox supports different featuresets for different metadata formats. The
+    following tables gives an overview for the main features and formats.
+    
+    \begin{rbtabular}{\textwidth}{lccccX}%
+    {\textbf{Feature} & \textbf{ID3} & \textbf{APE} & \textbf{Vorbis} & 
+     \textbf{MP4} & \textbf{ASF}}{}{}
+     Embedded albumart \fname{.bmp}     &   &   &   &   &   \\
+     Embedded albumart \fname{.jpg}     & x &   &   & x &   \\
+     Embedded albumart \fname{.png}     & x &   &   & x &   \\
+     Gapless playback information       & x &   &   & x &   \\
+     Replaygain information             & x & x & x & x & x \\
+     Title (string)                     & x & x & x & x & x \\
+     Artist (string)                    & x & x & x & x & x \\
+     Album (string)                     & x & x & x & x & x \\
+     Genre (string)                     & x & x & x & x & x \\
+     Disc (string or number)            & x & x & x & x &   \\
+     Track (string or number)           & x & x & x & x & x \\
+     Year (string or number)            & x & x & x & x & x \\
+     Composer (string)                  &   & x & x & x & x \\
+     Comment (string)                   & x & x & x & x & x \\
+     Albumartist (string)               & x & x & x & x & x \\
+     Grouping (string)                  &   & x & x & x &   \\
+    \end{rbtabular}
+    
+    Featureset for codec specific (embedded) metadata tags.
+    
+    \begin{rbtabular}{\textwidth}{lX}%
+    {\textbf{Feature} & \textbf{Codec specific metadata (file extension)}}{}{}
+     Embedded \fname{.bmp}  & None \\
+     Embedded \fname{.jpg}  & None \\
+     Embedded \fname{.png}  & None \\
+     Gapless                & All lossless and \fname{.mpc} \\
+     Replaygain             & \fname{.mpc}\\
+     Title                  & \fname{.tta}, \fname{.spc}, \fname{.mmf}, \fname{.sid}, 
+                              \fname{.rm}, \fname{.ra}, \fname{.rmvb}, \fname{.nsf}, 
+                              \fname{.nsfe}, \fname{.mod}, \fname{.sap} \\
+     Artist                 & \fname{.tta}, \fname{.spc}, \fname{.mmf}, \fname{.sid}, 
+                              \fname{.rm}, \fname{.ra}, \fname{.rmvb}, \fname{.nsf}, 
+                              \fname{.nsfe}, \fname{.sap} \\
+     Album                  & \fname{.spc}, \fname{.sid}, \fname{.nsf}, \fname{.nsfe} \\
+     Genre                  & \fname{.tta}, \fname{.spc}, \fname{.sap} \\
+     Disc                   & \fname{.tta} \\
+     Track                  & \fname{.tta} \\
+     Year                   & \fname{.spc}, \fname{.sid}, \fname{.sap} \\
+     Composer               & \fname{.mmf} \\
+     Comment                & \fname{.spc}, \fname{.rm}, \fname{.ra}, \fname{.rmvb} \\
+     Albumartist            & None\\
+     Grouping               & None\\
+    \end{rbtabular}
 }