sqlplus select header question

Does anyone know how to do a select and have only one header print instead of having a header on each page of output.

When I do a select I get an output that looks like this:

   field1 field2 ...
   data data data
   data data data
   data data data
   data data data
   data data data
   field1 field2 ...
   data data data
   data data data
   data data data
   data data data
   data data data

I want this

   field1 field2 ...
   data data data
   data data data
   data data data
   data data data
   data data data
   data data data
   data data data
   data data data
   data data data
   data data data

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