What does APRX mean?

GIS_Hotz

When I started working with ArcGIS Desktop (i.e. ArcMap) in 2005 I learned that the mapping file was referred to as an "MXD".  I also learned that this initialism stood for "Map Exchange Document".

ArcGIS Pro uses a map file with the APRX exension.  What does APRX mean?  I can think of a few possible definitions (e.g. ArcGIS Pro Exchange document?), but I would like to get this right for an ArcGIS Pro document I'm creating where I work, and eventual user manual.

I have searched online and through a LOT of ESRI documentation, but the best I can find is that it's a "mapping file"...but nowhere have I been able to find out what this actually initialism means.

Suggestions?


Thank you.

kenbuja

As @ChristopherCounsell wrote, it stands the ArcGIS Project File.

However, the "x" part reflects the naming convention that Microsoft introduced in Office 2007 for their new Open XML File Format. It is a zip file consisting of many files (either json or xml files) and folders. You can rename it to .zip and open it up to examine the contents. An mxd file is in binary format, which isn't viewable.