-L     If  the  PWD environment variable contains an absolute pathname of the current directory that does
       not contain the filenames dot or dot-dot, pwd  shall  write  this  pathname  to  standard  output.
       Otherwise, the -L option shall behave as the -P option.

-P     The  absolute  pathname  written shall not contain filenames that, in the context of the pathname,
       refer to files of type symbolic link.