Sometimes the canvas in the 2d-workspace of a subsystem (or component) is grayed out and the parameters in the parameter pane cannot be changed.
Example from the Model Gallery where the mass cannot be changed
Another example of a CAD geometry where I would like to change color and transparency: seeshell.msim
How to unprotect the parameters?
I have observed that copy and pasting (Edit2: in a new document) and deleting the original component and copy/paste back into the original document and reconnection of the pasted component works. Are there shorter ways to unprotect?
And: How to do the reverse action (i.e. protecting a component)?
(I could not find a "when" and "why" for the protection in the documentation. Maybe I overlooked something)
Other reasons why to unprotect are suppressions of components and highlight of multibody ports and axes.
Adding or reformating automatically generated ports (Edit3).