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{{HowTo's
|[[HowTo:Import an IMSMA Map|Import an IMSMA Map]]|[[HowTo:Modify an IMSMA Map|Modify an IMSMA Map]]
}}
{{note|Any changes made to IMSMA<sup>NG</sup> maps apply only to the client on which the changes were made. To make system-wide map changes for client-server installations, updated maps must be imported on each client installation}}
All geospatial data in IMSMA<sup>NG</sup> is stored in LLWGS84 decimal degree format, but IMSMA<sup>NG</sup> can display data in virtually any coordinate system. IMSMA<sup>NG</sup> 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 IMSMA<sup>NG</sup> 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]]
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In addition to customised coordinate systems and projections, IMSMA<sup>NG</sup> supports the use of localised number formats for coordinate entry, for example 73.233 or 73,233. IMSMA<sup>NG</sup> 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.