LEVEL equ 1 select level one
 ifp1
 use /d0/defs/os9defs
 use /d0/defs/os9sysdefs.li
 use /d0/defs/os9iodefs
 use /d0/defs/os9rbfdefs
 use /d0/defs/os9scfdefs
 use /d0/defs/li.equates
 use /d0/defs/systype
 endc
 use /d0/defs/sysdefs.sys

