Controls whether objects are allocated in the static area.
switch-static-allocation flag => previous-flag
If flag is non-nil, subsequent objects are allocated in the static area; if flag has any other value, objects are allocated conventionally.
switch-static-allocation returns the previous setting of flag.
Objects in the static area are garbage-collected, but not moved.
You should avoid using this function.
LispWorks User Guide and Reference Manual - 20 Sep 2017