diff --git a/OS-DESIGN.md b/OS-DESIGN.md
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-# Overview
-
-
-# System calls
-
-## System call list
-
-### map_anonymous(location, size, flags)
-
-
-
-Privilage level: user
-
-### unmap_anonymous(location, size)
-
-Privilage level: user
-
-### map_physical(location, size)
-
-Privilage level: system
-
-### unmap_physical(location, size)
-
-Privilage level: system
-
-### object_create(location, size, flags)
-
-Privilage level: user
-
-### object_aquire(id, location)
-
-Privilage level: user
-
-### object_release(id)
-
-Privilage level: user
-
-### send_pid(data, dest, flags)
-
-Privilage level: user
-
-### send_port(data, dest, flags)
-
-Privilage level: user
-
-### receive(buffer, flags)
-
-Privilage level: user
-
-### port_open(id)
-
-Privilage level: user
-
-### port_close(id)
-
-Privilage level: user
-
-### clone(entry, arg, stack, flags)
-
-Privilage level: user
-
-### signal_action(id, action, flags)
-
-Privilage level: user
-
-### signal_return()
-
-Privilage level: user
-
-### signal_raise(pid, id, arg)
-
-Privilage level: user
-
-### interrupt_action(id, action, flags)
-
-Privilage level: system
-
-### interrupt_return()
-
-Privilage level: system