Raytheon Anschütz SYNAPSIS ECDIS Operator's Manual page 413

When multiple GRIB files are enabled with overlapping geographic
regions, the resulting grid region may not be synchronized to each other.
This effect may be reduced by decreasing the view area.
The priority may be changed by moving files up (more priority) or down (less
priority), (1.) selecting a continuous range and (2.) pressing the Up or Down but-
ton.
The Sort button will reorder all files according to the shown start time of all files --
i.e. a newer start time has more priority then an older start time.
To delete files, (1.) select any collection of files and (2.) press the Delete button.
To purge files (expired or invalid), press the Purge button.
To enable or disable a file select the checkbox to the left of the file -- a disabled
file will temporarily not be used to access any GRIB data.
Enable the Auto--Follow checkbox to force the ECDIS view to display the geo-
graphic region of a selected GRIB file -- the area is shown bounded by an
orange (bounded) rectangle.
In the lower area detailed information about a selected GRIB file is shown:
 Source
 Geo Area
 Grid Spacing
 Forecast Times
 Products
Edition: January 2016
SYNAPSIS ECDIS
Operator Manual
NOTE
the emitting center and sub--center
the geographic region of the data
the grid spacing in units of degrees (0.400 horizontal and
vertical in the example)
the overall forecast time range
contained products with abbreviated short names and
description
16--5
R
Raytheon Anschütz GmbH
Germany
4343DOC020102