[en] The additional clauses refer to 'subordinate regulations applied to primary acts in order to limit the effect of administrative acts (conditions and time limits), impose special obligations (burden) or complement requirements (reservation of the right to withdrawal and reservation of posterior changes).' Its merits include the following: i) it is possible to work out a compromise between accepting and rejecting applications by attaching additional clauses to certain measures (flexibility in permitting administrative acts); ii) it is possible to prevent re-applications and re-examinations after rejection of applications (pursuit of economy of the proceedings); and iii) it is possible to take appropriate actions to protect the interest of third parties or the public interest. Its detriment is that any rescinding additional clauses including rescission conditions, time limit(expiring time) and reservation of the right to withdrawal may generate results where the costs incurred for adaptation of posterior changes after administrative act(measures taken) are transferred to the counter-party