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{| class="wikitable" width="600900"
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| align="center" colspan="2" | '''Guidelines for Designing Map Backgrounds'''
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| width="300pt100pt" | '''Guideline'''| width="300pt800pt" | '''Explanation'''
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| align="left" | Use only the layers you need || align="left" | When creating or customising maps, include only the layers necessary for map visualisation. Extra layers take up space and present users with unnecessary, confusing options. Consider tailoring specific maps for each user group, for example, building one map for education activity users and a separate map for operations staff.
|[[Modify an IMSMA Map|Modify an IMSMA Map]]
}}
{{note|Any changes made to {{IMSMANG}} maps apply only to the client computer on which the changes were made. To make system-wide map changes for client/server installations, On other computers the updated background maps must be imported on each client installation.}}
==Map Themes and Symbology==__NOEDITSECTION__
* Back up any customised map files including any font files (.TTF), style files (.STYLE) and .MXD files, particularly the imsma.mxd file. {{IMSMANG}} does not automatically back up customised files.
* Any problems caused by incorrectly configured map customisations can be corrected by replacing the imsma.mxd file from the original installation and reimporting the map.
* All map changes, including symbology customisations and .MXD changes, affect only the client computer on which they are applied. To share these changes to other clients on the servercomputers, the customised files must be copied to each client installation computer and the map reimported.* If changes do not appear to be taking affect as expected in the newly updated map, delete and rebuild the client sandbox to ensure the client uses the most up-to-date data.}}
==Projection and Coordinate Systems==__NOEDITSECTION__
|[[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 computer's locale /regional 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.
{{note|
* 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 computer 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.
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