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These items should be used whenever any type of file is to be read or
written by the program that you are creating.
The "INPUT FILE" and "OUTPUT FILE" buttons operate similarly.
To add a new input file or output file item in your pane, click on
the desired button.  This will pop-up a list of the -I or -O template items
that you can add.  Click on the item in the list that you want.
Once you have done this, you can begin editing the fields in the
bottom two thirds of the composer form.
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If you have an existing -I or -O item, and wish to add
another, you have the option of copying an existing item or adding
a new one.  To add a new item, just click on the 
"INPUT FILE" or "OUTPUT FILE" button.  The list that pops up will have
a new template item as the last entry on the list.  
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If you wish to
copy an existing item,  click on the "COPY" button.  This will give you a list
of all items on the pane that you are editing.  Select the -I or -O
line in the list that you wish to copy.  A new line will be created with
a position that is below the selected item.
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After a -I or -O line is selected, edit the fields in the composer form
to meet your requirements.  The fields both determine the appearance of
the graphical user interface (the pane) and the command line user
interface.  Though you can immediately view the pane, \fBghostwriter\fP must
be run before you can examine the command line user interface.
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There are several conventions to follow for the input/output files.  Input 
files should be positioned above output files, with all other items
placed below.  The variable or command line argument flag should usually
be an "i" for a single input file and an "o" for an output file.  If you
have more than one file, the first one should be "i1" followed by "i2",
"i3", etc.  If the file is a mask input viff image, "-m" is typically
used.  If the file is an ascii output file, "-f" is typically used.
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NOTE THE FOLLOWING:
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The "Default File" should usually be set to no filename (empty string).
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The "Live" option field should not be used for cantata pane files.
