Constants
 ConstantDescription
 C_IRGRP AVM-only Read by group.
 C_IROTH AVM-only Read by others.
 C_IRUSR AVM-only Read by owner.
 C_ISBLK AVM-only Block special.
 C_ISCHR AVM-only Character special.
 C_ISCTG AVM-only Reserved.
 C_ISDIR AVM-only Directory.
 C_ISFIFO AVM-only FIFO.
 C_ISGID AVM-only Set group ID.
 C_ISLNK AVM-only Symbolic link.
 C_ISREG AVM-only Regular file.
 C_ISSOCK AVM-only Socket.
 C_ISUID AVM-only Set user ID.
 C_ISVTX AVM-only On directories, restricted deletion flag.
 C_IWGRP AVM-only Write by group.
 C_IWOTH AVM-only Write by others.
 C_IWUSR AVM-only Write by owner.
 C_IXGRP AVM-only Execute by group.
 C_IXOTH AVM-only Execute by others.
 C_IXUSR AVM-only Execute by owner.
 MAGIC AVM-only Magic constant.