DOC: mention explicitly text files as media files

README.rst

@@ -7,7 +7,7 @@ audformat
 Specification and reference implementation of **audformat**.
 
 audformat stores media data,
-such as audio or video,
+such as audio, video, or text
 together with corresponding annotations
 in a pre-defined way.
 This makes it easy to combine or replace databases

docs/data-format.rst

@@ -8,9 +8,13 @@ On hard disk all of them are stored inside a single folder.
 The header is stored as a YAML file,
 the tables contain labels stored in (possibly) multiple CSV or PARQUET files,
 and the media files are usually stored in sub-folders.
+Media files are not restricted to a particular file type,
+but consist usually of audio, video, or text files.
 Each table column is linked to a scheme and/or to a rater.
 Each table row is linked to a media file,
-or a specific segment in a media file.
+or,
+if applicable,
+a specific segment in a media file.
 If no links to media files are given,
 the table is called miscellaneous table,
 or short **misc table**.
@@ -26,7 +30,7 @@ The database is implemented as :class:`audformat.Database`.
                                           and columns holding annotations
     ``db.<misc_table_id>.[csv|parquet]``  Misc table with unspecified index
                                           and columns holding annotations
-    ``<folder(s)/file(s)>``               Audio/Video files referenced in the tables
+    ``<folder(s)/file(s)>``               Media files referenced in the tables
     ====================================  ==========================================
 
 The connection between the header, media files and a table

docs/data-introduction.rst

@@ -20,7 +20,7 @@ but simple enough to be understood and parsed easily**.
 
 The format further allows to
 
-* link audio files to meta data and annotations
+* link media files to meta data and annotations
 * use generic tools to access the data,
   create statistics,
   merge annotations