A timestamp (<x id="START_ITALIC_TEXT" ctype="x-i" equiv-text="<i>"/>00:05<x id="CLOSE_ITALIC_TEXT" ctype="x-i" equiv-text="</i>"/> for example) is automatically converted into a link to a part of the video.
Short text to tell people how they can support the channel (membership platform...).<br /> When a video is uploaded in this channel, the video support field will be automatically filled by this text.