Clarify Flatpack does not handle internal pointers correctly, and that this particularly affects slices.
Clarify Flatpack does not handle internal pointers correctly, and that this particularly affects slices.

NeilFraser/CodeCity,google/CodeCity,NeilFraser/CodeCity,NeilFraser/CodeCity,google/CodeCity,google/CodeCity,google/CodeCity,NeilFraser/CodeCity