ra,r,h,,0.,24.,Right Ascension of the object
dec,r,h,,-90.,90.,Declination of the object
epoch,r,h,INDEF,,,Epoch of the coordinates

year,i,h,,,,Year of the observation
month,i,h,,1,12,Numerical month specification
day,i,h,,1,31,Day of the month

observatory,s,h,"observatory",,,Observatory

timesys,s,h,"Standard","|Universal|Standard|Siderial|",,Time system
resolution,r,h,4,0.25,,Number of UT points per hour
listout,b,h,no,,,"List, rather than plot, the airmass vs. UT"

wx1,r,h,-7.,,,left user x-coord if not autoscaling
wx2,r,h,7.,,,right user x-coord if not autoscaling
wy1,r,h,0.,,,lower user y-coord if not autoscaling
wy2,r,h,5.,,,upper user y-coord if not autoscaling
pointmode,b,h,no,,,plot points instead of lines
marker,s,h,"box",\
  "point|box|plus|cross|circle|hebar|vebar|hline|vline|diamond",\
  ,point marker character 
szmarker,r,h,5E-3,,,marker size (0 for list input)
logx,b,h,no,,,log scale x-axis
logy,b,h,no,,,log scale y-axis
xlabel,s,h,"default",,,x-axis label
ylabel,s,h,"Airmass",,,y-axis label
title,s,h,"default",,,title for plot
vx1,r,h,0.,,,left limit of device window (ndc coords)
vx2,r,h,0.,,,right limit of device window (ndc coords)
vy1,r,h,0.,,,bottom limit of device window (ndc coords)
vy2,r,h,0.,,,upper limit of device window (ndc coords)
majrx,i,h,5,,,number of major divisions along x grid
minrx,i,h,5,,,number of minor divisions along x grid
majry,i,h,5,,,number of major divisions along y grid
minry,i,h,5,,,number of minor divisions along y grid
round,b,h,no,,,round axes to nice values
fill,b,h,yes,,,fill device viewport regardless of aspect ratio?
append,b,h,no,,,append to existing plot
device,s,h,"stdgraph",,,output device