Player environment configuration

[Mira]

Hello, I would like ask you for help with configuration jucevlc. Try to look for documentation, but didn find it. Can you help me find answers to these questions?

1. Where can I find the list of parametres I can use in settings.xml to configure player ?
2. Can I lock the toolbar so it doesn't hide ?
3. Can I change the toolbar icons (especially hide icon fullscreen/windows mode) ?
4. Can I lock the app Options somehow in settings.xml ?

Thank you in advance for any guidance or tips.