Ferret Version 5.51 Release Notes
March 3, 2003
This is primarily a bug fix release.  Bug Fixes:
Bug with SHADE/HLIMITS /VLIMITS fixed. The limits were applied
to the axes, but the full range of data was used for the plot itself. (Bug was
seen in sessions where only x-windows open, but not if a metafile was open, 
and not in batch mode.)
Can now use filenames that begin with a digit. Previously, 
"set data 12v1.cdf; can data 12v1" saw an argument starting with a digit 
as a dataset number rather than a file name.
Treat .nc extension consistently the way .cdf is used. Previously, 
for instance, the following failed to find and cancel dataset dat1:
    yes? use dat1.nc
    yes? cancel dat1
Fix FILL plots in viewports defined with /AXES. Fill plots were
incorrectly clipped in these viewports.
Plot a color key for viewport plots, even if the key lies outside
the viewport. This particularly applies to viewports that are defined with 
/AXES.  Note that color keys are easily removed with SHADE/NOKEY or FILL/NOKEY.
Fix location on page of the 1st viewport plotted. When a viewport
is defined with the /AXES qualifier, the first time in a session that
a viewport was plotted it was mis-positioned on the plot page.
Can re-define a time axis to have a different calendar type. 
If a time axis is defined, its calendar can be changed by issuing a new
DEFINE AXIS/CALENDAR= command.
Bug reading seconds portion time origin from some NetCDF files. 
Both of these formats are valid: "10-JUN-1996 04:03:36", and  "1996-06-10 04:03:36"
Axes can be defined using more complex expressions. For example,
    yes? LET a = {1,2,3}
    yes? LET b = {2,3,4}
    yes? DEFINE AXIS/X xax = a/2 + b/2
    yes? LIST x[GX=XAX]