Basic Information on delhd

Task: delhd
Purpose: Delete a dataset item.
Categories: utility

DELHD is a MIRIAD task to delete an item from a MIRIAD dataset.

For image datasets items are not only header variables, such as
``crpix1'', ``datamin'' etc., but also the ``mask'' and ``image''
items.
For visibility datasets examples of items are ``wflags'', ``gains''
and ``pdata'', but NOT the uv variables. They cannot be deleted.
See also copyhd, itemize, mathd and puthd.

Key: in
The name of an item within a dataset. This is given in the form:
      % delhd in=dataset/item

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