[daip] Help with AIPS

[Jonathan Mines]

I sent an e-mail to you last week.  I have made some progress since 
then, so assuming that you didn't read it yet, feel free to delete it.  
However, I have a few new questions.

1.  What does the below error message mean?  I have already attempted to 
look it up, use the "help" and "explain" commands, etc.  I seemed to be 
successful in executing the prtan command, however.

 >go
*ERROR  3 ON UNIT TTDEV01         , GETTING HOST/SERVICE BY NAME
 ZMSGOP: ZTTOPN RETURNS ERROR =   1 FOR LUN =   6*
 phbehar2  PRTAN(31DEC05)      1     28-DEC-2004  15:54:09    Page    1
File=MARK1.041228.C BAND.   1     An.ver=   1     Vol= 1     User=    1
Array= VLA          Freq=  4885.100000 MHz     Ref.date= 13-NOV-2004

Array reference position in meters (Earth centered)
Array BX=  -1601185.36500    BY=  -5041977.54700    BZ=   3554875.87000
Polar X =   0.00000 Polar Y =   0.00000 arcsec
Earth rotation rate =  360.9856449762 degrees / IAT day
GST at UT=0 =  412.4484726583 degrees
UT1-UTC=      0.0000000   Data time(IAT     )-UTC=      0.0000000 secon d
Solutions not yet determined for a particular FREQID
.
.(more printout)
.


2.  I received another error message when executing the "fillm" 
command.  For future reference where can I obtain more information on 
these errors?  They are not in either the AIPS index or glossary.  Thank 
you.

Regards,

Jonathan Mines