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"Subsetting services" refers to data customization options offered by data providers for select products.  These may include data reformatting (e.g. to NetCDF,  GeoTIFF, KLM and other file formats), data reprojection, data subsetting, and other options. Collections for which subsetting services are available are indicated with the label "SUBSETTING" following the collection name.   

You can filter your search for To see only products that only support subsetting by checking , check the "Features | Subsetting Services" checkbox on the level left in collection view.

You To specify the subsetting services you want , when you order, by choosing placing an order choose the "Customize Order" option.    

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