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==Projection and Coordinate Systems==
All geospatial data in IMSMANG is stored in LLWGS84 decimal degree format, but IMSMANG can display data in virtually any coordinate system. IMSMANG comes with all the coordinate systems available to ArcGIS Desktop products like LLWGS84 and MGRS, yet information managers can add other systems their programmes use including UTM and national coordinate systems. Using the Coordinate System manager, information managers can add coordinate system and projection (or .PRJ) files to IMSMANG and establish a set of relevant systems that can be used for coordinate data entry and visualisation.
{{HowTo's|[[HowTo:Add a Coordinate System|Add a Coordinate System]]|[[HowTo:Change the Display Name of a Coordinate System|Change the Display Name of a Coordinate System]]|[[HowTo:Remove a Coordinate System|Remove a Coordinate System]]}}
In addition to customised coordinate systems and projections, IMSMANG supports the use of localised number formats for coordinate entry, for example 73.233 or 73,233. IMSMANG validates all numeric coordinate data based on the client’s locale settings so users running in a locale that uses a comma as a decimal separator can enter 72,333 while users running in a locale where a period is the decimal separator can enter 72.233.
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* Coordinate systems added via the Coordinate System manager are available to all users connecting to the IMSMANG server. If customised .PRJ files are used, information managers must copy these files to each client to ensure the accurate display of coordinates in the new system.
* Limiting the available coordinate systems within IMSMANG, for example, one or two UTM zones and a national system, simplifies coordinate data entry and visualisation}}