The "Live Preview Editing" function allows you to display a different part of the timeline in Pixera's preview than at the output.
This makes it possible to edit the current timeline during a running show, exchange or add content, create animations and keyframes and then display/run these changes in the preview for control purposes.
This functionality is part of the so-called "Multi Head Functionality". This allows Pixera to create multiple "playheads" or "nowpointers" which makes such a feature possible.
The following video shows how to use "Live Preview Editing".