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ILIS Maps can be launched from ILIS using the link in the left hand Menu. Note that, as mentioned above, to connect to ILIS you must first setup an account. If you cannot login to ILIS, you will not be able to download spatial data.
Figure 1: ILIS Maps link in ILIS
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Once in ILISMaps, click the Spatial Data Download button: 
to bring up the Data Download Form. In this form you can choose the layers, GIS file format, coordinate system and extent you require.
Figure 2: Spatial Data Download Form
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