Syntax: !setflag name 0|1This allows the flags associated with the current cell to be changed. The second form of the command brings up a window containing a list of the flag names and descriptions, as does !setflag without arguments.
Syntax: !setflag ?
The IMMUTABLE and LIBRARY flags can also be modified with the Set Cell Flags pop-up from the Cells Listing panel.
The IMMUTABLE flag will also control availability of user interface features associated with cell editing. This flag is also set by the Enable Editing button in the Edit Menu.