This tool for is useful for the following: providing a big picture of the size and nature of the MHPSS response; identifying gaps in the MHPSS response to enable coordinated action; enabling referral by making information available about who is where, when, doing what; informing appeal processes; improving transparency and legitimacy of MHPSS through a common language and structured documentation; and improving possibilities for reviewing patterns of practice and for drawing lessons for future response.