[Wien] Question about 2D-Fermi Surface plotting

[arrinas]

Dear Pro. Blaha and wien2k users,
         Greetings.
         I am working on a 2D Fermi surface of LaFeAsO , and following the steps on UG I got the fort.** files.
However, we don't have pgplot and plotgenc.So my questions are:
         1. Is there  any plotting-program I can use to plot the fort files?
         2. The fort file I got looks like:
                       20          20  0.8246000      0.8246000 
-0.25961699E+01 -0.26794386E+01 -0.27745819E+01 -0.28575199E+01 -0.28953395E+01 
          What is the meaning of the second line and below of the fort file?
          Is it OK if I want to plot using gnulpot? If so , any experience or suggestion will be appreciated.

Best Regards,



Bo Wan
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