   ,     
  PEOBJEDITHOME  ,    .
..    Windows:
set PEOBJEDITHOME=C:\custprj

      "Using persistent user-defined objects.htm"   "Doc&template".
http://edndoc.esri.com/arcsde/9.0/capi_concepts/using_persistent_user.htm
http://support.esri.com/en/knowledgebase/techarticles/detail/29479

  , , ,    ..,       :
"C:\Program Files (x86)\ArcGIS\Desktop10.3\Documentation\"
1. geographic_coordinate_systems.pdf
2. projected_coordinate_systems.pdf
3. geographic_transformations.pdf
     : 
http://webhelp.esri.com/arcgisdesktop/9.1/index.cfm?id=1837&pid=1836&topicname=An%20overview%20of%20map%20projections
http://desktop.arcgis.com/ru/arcmap/latest/map/projections/pdf/geographic_coordinate_systems.pdf
http://desktop.arcgis.com/ru/arcmap/latest/map/projections/pdf/projected_coordinate_systems.pdf
http://desktop.arcgis.com/ru/arcmap/latest/map/projections/pdf/geographic_transformations.pdf

       -           ArcGIS  .
   PEOBJEDITHOME ArcGIS   (10.0  )         .

     "  90" - RUSSIA_PZ90 ( ), 
        
     PZ90, WGS84, 42, 95.
       51794-2001. 
   WGS84  90   95 ( ) - 0.2     0.3   .
   42  90,  WGS84  CK95 ( ) - 2     3   .

 10.1    PEOBJEDITHOME   PEDATABASE:
set PEDATABASE=objedit@C:\custprj
