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Creating, deleting, moving and replacing operators

If you started with a blank experiment or you want to modify an experiment created by the Wizard, the thing you probably want to do is create a new operator.

Since this feature seemed most important to us it is accessible from many places: from the Edit menu, the icon bar below the menu bar, the icon bar below the tree, the context menu popping up whenever you right-click on an operator of the tree, or simply by pressing [Ctrl-I]. Figure 5 shows the icon for operator adding.

Figure 5: The new operator icon.
\begin{figure}\center
\epsfig{file=new_operator.eps}\end{figure}

Whichever way you choose to activate this function, it will pop up an operator browser that lets you choose the operator type (select a group or input or output types first if you want to decrease the number of possible selections). This browser displays all available information about the currently selected operator. You should name the operator before you add it into your experiment. You can always rename an operator by pressing [F2] or triple clicking it in the tree view. Figure 6 shows the operator browser.

Figure 6: The Operator Browser for information and operator adding.
\begin{figure}\center
\epsfig{file=operator_selection.eps,width=0.88\linewidth}\end{figure}

Another way to add an operator is to right click on the parent operator and select the operator from the New operator submenu. Adding operators directly from the context menu is a very fast way of experiment design. Both ways of adding are only possible if an operator chain is selected, i.e. an operator which can have children.



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