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KB10519 - Project visible extent and layer activity stored in the project file.

As of the DK v.8, visible extent and layer activity information is automatically stored to the project file upon SaveAll / SaveProjectxxx call. VisibleExtent is reapplied after call GIS.Open method.

Do not call GIS.FullExtent. If you call GIS.Open to open a single layer, then FullExtent will be called internally.

GIS.Open( 'myproject.ttkgp' )
// GIS.FullExtent ; <--- THIS IS OBSOLATE
Created: April 08, 2004, Modified: August 28, 2015