r options are set to default values. Look at the section Options for
learning what the default options.
 
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<A NAME="section2.2"> </A> 2.2 &nbsp; Interactive interface
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  If no parameters were supplied then eopkal will ask you for an input file.
This is an "eopjmg" file produced by snoop or .eob files produced by getpar.
Enter the name of the input file e.g., /tmp/snoop.eopjmg.1102x. It will then
ask for the output file. Typical