`-Dn` is missing from user guide
The -Dn
debug flag for non-moving collector information is missing from the user guide.
It should be listed along with the other -D*
flags here: https://downloads.haskell.org/ghc/latest/docs/users_guide/runtime_control.html#rts-flag--Dk%20%20DEBUG:%20continuation
The corresponding -ln
flag is documented