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<HTML>
<HEAD>
<TITLE>Xmgr: Edit/Create set operations</TITLE>
</HEAD>
<BODY>
<h2> <a NAME="setops">Edit/Create set operations</a> </h2>
<p>
Edit/Create set operations allow sets to be created using a formula or editor
or edited in a spreadsheet-like fashion.
<HR>
<p>
<ul>
<li> <a href="#Edit">Edit</a>
<ul>
<li> <a href="#eadd">Add</a>
<li> <a href="#edelete">Delete</a>
<li> <a href="#eprop">Props...</a>
<li> <a href="#eupdate">Update</a>
</ul>
<li> <a href="#formula">Formula</a>
</ul>
<HR>
<h3> <a NAME="edit">Edit</a> </h3>
<p>
Edit allows altering an existing set or creating a new one.
The editor invoked is either the Xbae edit widget (if installed)
or an external
editor defined by the <a href="usage.html#environment">GR_EDITOR</a>
variable.
If the choice of the two is available,
a radio button will be present to select the desired editor.
<p>
<h4> Xbae Editor </h4>
For the internal Xbae editor, the following applies:
Values are updated by pressing return or when leaving a cell.
Several buttons appear on the widget:
<p>
<ul>
<li> <a NAME="eadd">Add</a>
<p> Add a point to a set by copying the currently
edited cell and appending it directly afterwards
<p>
<li> <a NAME="edelete">Delete</a>
<p>
Delete the current point.
<p>
<li> <a NAME="eprop">Props...</a>
<p>
Change the format, precision and column widths of the table.
<p>
<li> <a NAME="eupdate">Update</a>
<p>
Refresh the display. This is useful if the set type changes or the number of
points changes.
</ul>
<HR>
<h3> <a NAME="formula">Formula</a> </h3>
<p>
This may only be used to create new sets.
See <a href="trans.html#leval"> Load & evaluate </a>
<p>
<HR>
</BODY>
</HTML>
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