Справочник Пользователя для National Instruments Ultiboard

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You can select and unselect single and multiple elements in a design such 
as parts, holes, and traces. 

To select a single element on a board, click the element. A dotted line 
around the element, or running through the trace, indicates that it has been 
selected.

Complete the following to select multiple elements on a board:

Hold down the Shift key while clicking the elements that you want to 
select.

Click and drag to draw a box around the elements you wish to select. When 
you release the mouse button, the elements that were inside the box are 
selected.

To select all elements on a board, choose Edit»Select All or press <Ctrl-A>.  

Complete the following steps to select an entire trace, not just a trace 
segment: 

1.

Select a segment belonging to the trace you want to select.

2.

Choose Edit»Select Entire Trace. The entire trace is then selected.

To unselect one element, select another element or click outside of the 
board outline. 

To unselect one element in a group of selected elements, hold the Ctrl key 
down and click the element to be unselected. 

As you add more parts and traces to a board, it can become more difficult 
to select only those which you want to use. Ultiboard provides you with 
selection filters to allow controlled selections. The selection filters are 
found in Edit»Selection Filter and the Select toolbar. By default, all the 
selection filters are on, that is, you can select any element. Use the filters to 
select or not select specific elements by toggling the choices on and off. For 
example, to select only traces, disable the other selection filters and enable 
only the traces one. As you work through your design, you will find 
different combinations of selection filters helpful to prevent accidentally 
selecting (and potentially modifying) elements.