"multiple @spec tag": had to move -specs around.
Formating and cleansed spaces, to make sense of it.
"multiple @spec tag": had to move -specs around.
"multiple @spec tag": had to move -specs around.
"multiple @spec tag": had to move -specs around.
Moved around invalidate_session/2,3 -specs.
Finish moving around specs just to please edoc.