Document setting track attributes

README.md

@@ -129,7 +129,8 @@ However, this feature is still experimental.
 ```
 tageditor <operation> [options]
 ```
-Checkout the available operations and options with `--help`.
+Checkout the available operations and options with `--help`. For a list of all available field names, track
+attribute names and modifier, use the CLI option `--print-field-names`.
 
 #### Examples
 Here are some Bash examples which illustrate getting and setting tag information:
@@ -151,7 +152,7 @@ Here are some Bash examples which illustrate getting and setting tag information
   tageditor info --files /some/dir/*.m4a
   ```
 
-##### Writing tags
+##### Modifying tags and track attributes
 * Sets title, album, artist, cover and track number of all \*.m4a files in the specified directory:  
   ```
   tageditor set title="Title of "{1st,2nd,3rd}" file" title="Title of "{4..16}"th file" \
@@ -195,6 +196,13 @@ Here are some Bash examples which illustrate getting and setting tag information
         - `id3`: ID3v2 ID (must be exactly 3 or 4 characters depending on the tag version)
         - `vorbis`: Vorbis comment ID
 
+* Removes the "forced" flag from all tracks, flags the track with the ID 2 as "default" and sets its language to "ger":  
+  ```
+  tageditor set track=all forced=no track=2 default=yes language=ger
+  ```
+
+    - So modifying track attributes is possible as well and it works like setting tag fields.
+    - Specific tracks can currently only be referred by ID.
 
 * Here is another example, demonstrating the use of arrays and the syntax to auto-increase numeric fields such as the track number:  
   ```