[KevinH]

A few things:

- Sigil plugins have their own guis and can not be used to change Sigil internal gui elements

- There are no plans to add an icon to show hide Sigil given a shortcut key sequence already exists. You can just leave Preview open all the time, and undock it to place it in a separate monitor. Since Preview is a dock widget, you can of course instead stack it under the Table of Contents or some other dock widget and a single mouse click on the resulting tabs will do what you want.

- Find is not done in Preview. Only CodeView. Preview just shows the resulting CodeView contents updated as need be. You can sync position of CodeView to Preview by clicking in one or the other.

- Readium, EpubJS, and Bibi plugins are reader plugins to allow you see how the current epub being edited in Sigil might look under some epub3 based readers.

- PageEdit is not a plugin, but instead its own editing program that can be used in conjunction with Sigil for minor edits during final proofing. It really only edits one xhtml file at a time and its search is limited to that single file.

I strongly suggest getting used to working in CodeView, leaving Preview open to give immediate feedback on non-well formed xhtml so corrections can be made instantly.

Also the CodeView's regex find and replace is actually quite a bit more powerful than anything you would get with QtWebEngine relatively simple Find abilities. That plus Saved Search groups can help to rapidly clean up poor html generated by other apps.