is a variable defined in `
C source code
Its value is
If non-nil, suppress point adjustment after executing a command.
After a command is executed, if point is moved into a region that has
special properties (e.g. composition, display), we adjust point to
the boundary of the region. But, when a command sets this variable to
non-nil, we suppress the point adjustment.
This variable is set to nil before reading a command, and is checked
just after executing the command.