Partica uses tags to indicate where different types of interactivity should appear in articles. It is not recommended to drop in iFrame code as there is no way then to control how a video might look on desktop, tablet or mobile.
To include a video in your article, use the following tag:
<rv-youtube id="YouTube-ID" align="left | right | center"></rv-youtube>
id is the YouTube video ID, eg: LigWsgzrHto
align determines how the video is displayed horizontally.
For example if you paste this into an article:
<rv-youtube id="LigWsgzrHto" align="center"></rv-youtube>
Then the viewer will place the Realview video in the article where you have pasted the code, and the video will be in the center (not left aligned).