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Astronomy packages such as Miriad and AIPS are not object oriented; they
are process oriented. This means that there is a process, usually
called a ``Task'' that has some particular functionality. For example,
in Miriad there is a Task called ``histo'' which computes statistics
from an image. The user supplies it with inputs such as the input image
file name and executes (runs) the task. With AIPS++, the same
functionality is achieved by constructing (creating) an Image tool from the image data file and then executing the statistics
function.
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2004-08-30
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