The orientation member defines the default orientation for all the website's top-level browsing contexts.
Add posibility to control "orientation":
Values orientation can take one of the following values:
any
natural
landscape
landscape-primary
landscape-secondary
portrait
portrait-primary
portrait-secondary
1.9 orientation member
The manifest's orientation member is a string that serves as the default screen orientation for all top-level browsing contexts of the web application. The possible values are those of the OrientationLockType enum, which in this specification are referred to as the orientation values (i.e., "any", "natural", "landscape", "portrait", "portrait-primary", "portrait-secondary", "landscape-primary", or "landscape-secondary").
If the user agent supports the value of the orientation member as the default screen orientation, then that serves as the default screen orientation for the life of the web application (unless overridden by some other means at runtime). This means that the user agent MUST return the orientation to the default screen orientation any time the orientation is unlocked [SCREEN-ORIENTATION] or the top-level browsing context is navigated.
Closed: duplicate
2.0
Code
This should be fixed in 📌 Overhaul manifest settings description and add remaining missing manifest settings Fixed .
Closing this as duplicate of the mentioned issue.