This format can be used to display images as a gallery. To attach images to the post please use Upload Images button.
...
Read more
Video Format
If your post contains video, please use this format. Select Video format in the appeared metabox and add the embed code from the video hosting you use (youtube, vimeo etc).
...
Read more
Audio Format
If your post contains audio, then you should use this post format. Select Audio in the appeared metabox and add link to your mp3 file.
...
Read more