JavaScript to set an Initial Vue option

That's what i was afraid of.

In fact, I wanted to convert an Action into a Custom Command, but a Custom Command embeds only 1 command, it can be a JavaScript OR a "Set Open Options", not both.

Thank you all, your support is precious.

Whenever I need to change some small settings for an automation script, settings that are not covered in the JS model, I write a plug-in for it.  Of course this is platform dependent. 

You can't change the actual Initial View settings with a script, but you can force the Pages panel to show, as was described above.

At document open use this:

this.pane = "T";