The GDScript Exports docs need to cover property_can_revert and property_get_revert too.

[willnationsdev]

Your Godot version:
3.2 stable

Issue description:
If you create runtime export variables via the _get, _set, and _get_property_list methods, then there is no clear way to define a default value for reverting any of the generated properties. The Inspector doesn't know that it can revert them.

The Inspector does provide overrides for forcibly determining true/false if a property can be overridden and a Variant response for what the reverted value should be via the property_can_revert and property_get_revert functions, but these methods are undocumented. I have covered their exclusion from the documentation in godotengine/godot#43078.

URL to the documentation page (if already existing):
https://docs.godotengine.org/en/stable/getting_started/scripting/gdscript/gdscript_exports.html#advanced-exports

[akien-mga]

Done for 3.4/3.5 with #6043, but this is still needed for 4.0. See relevant discussion in that PR.