Ferret hard limits

["Richard D. Slater" <rdslater@xxxxxxxxxxxxxxxxxxxx>]

I've seen references to some of this, but I don't recall seeing any definitive 
write-up about it. I know that ferret has several hard limits coded into it, 
such as 30 open files at one time, a limit on the length of a variable name 
(user defined variable, or even read in from a netCDF file?), limit on the 
length of a command with its arguments, etc. Is there some, one, place where 
these limits are all documented.

I'm familiar with the three that I mentioned above because I keep bumping into 
them (especially the 30 file limit).

Might some of these be relaxed, or made user selectable (if it is a question 
of memory, say)?

Thanks. Ferret is a great program, and I use it often.

Rick Slater