In a network diagram of any complexity, you'll probably find that you need to move text around or revise a shape to represent a unique device. Most of the network shapes are actually groups, which means they might not always work the way you expect them to. This is particularly true of the shape's labels that work in one of two ways; either the shape includes a label already, which is the case for all the basic network shapes, or you have to right-click the shape and choose to display a label, which is the case with all the logical network shapes. A final oddity of the network shapes is that many of them are actually Windows metafiles. It isn't difficult to edit metafiles as long as you identify them as such.
Some network shapes display labels and some do not. It depends on whether you're working with a basic network diagram or a logical one, as Figure 14-11 shows. Equipment includes a label if you're working in Visio Standard or if you dragged the shape from the Basic Network Shapes, Basic Network Shapes 2, or Basic Network Shapes 3D stencil. Shapes don't display a label if they come from any of the stencils that open with the Logical Network Diagram template (Generic Manufacturer Equipment, Internet Symbols, Logical Symbols, Network Devices, PC And Peripherals, Printers And Scanners, or Telecom). The logical network shapes are included only with Visio Professional.
Figure 14-11. Network shapes have two styles of label. The plotter shape from the Basic Network Shapes 3D stencil includes a label by default. The plotter shape from the Printers And Scanners stencil (Visio Professional only) has the option to display a label.
The sections that follow describe common editing techniques that work for network shapes. In addition, you can add titles to the page using the shapes from the Borders And Titles stencil.
For details about shape labels, see "Using Visio Shapes to Display Text."
To change the text that appears in a label, you can usually select the shape, and then type. "Usually" means that some shapes don't work this way. For example, to edit the text for the WWW Server shape on the Internet Symbols stencil, you must right-click the shape and then choose Edit Equipment Label.
If you're having difficulty typing a label, try clicking the Text tool on the Standard toolbar, and then clicking carefully in the text block you want to edit. Because the equipment shapes are groups, and each shape in a group can have its own text block, the "click and type" rule doesn't always apply—text can sometimes end up in the wrong place.
For details about text in groups, see "Adding and Editing Text in Groups."
When typing to replace a label on a network shape, Visio creates a new label instead of overwriting the existing one.
Most network equipment shapes are groups, which means that each shape in the group can have a text block and the group can have a text block. When you try to type a label, sometimes the text appears in a second label and doesn't overwrite the existing text as you expected. It can be easier to find the text block you want to overwrite when you click a group using the Text tool rather than the Pointer tool. You can also open a group in the group window by selecting the shape and then clicking Edit, Open Group or, if the shape has a name, Open <Shape Name>.
What if you want to move the label? The intention of the network shapes is to make this easy, but in practice, the shortcut is sometimes tricky to use. Shapes include a yellow control handle that you can drag to move the shape's text block, or label, as Figure 14-12 shows. Sometimes the handle seems sticky, and the label lurches farther than you intended. It can help to zoom in very closely, but it might just be quicker to use the manual method of moving a text block: click the Text Block tool on the Standard toolbar (it's located under the Text tool), and then drag the label exactly where you want it.
Figure 14-12. Pause the pointer over a control handle to display a ScreenTip about the handle's purpose. Labels on network shapes are designed so that moving the control handle repositions the label.
Connectors in a network diagram can run right through your labels. Sometimes it's impractical to move the labels out of the way, but you can make the text more readable by placing a solid color background behind it. There are a couple of ways to do this, but this technique is probably quickest:
Regardless of the number of equipment shapes in Visio, there never seems to be enough. You can customize any network shape to simulate a device that isn't included. Most of the network shapes are groups; some of them are also Windows metafiles (a more compact format). If you open the shape in the group window, you can then use the Format, Special command to identify its type as Figure 14-13 shows. Whether the shape is a group or metafile, the same technique applies. You ungroup the shape so that you can work with its constituent parts. Moreover, when you ungroup a metafile, the object is converted to a Visio shape, which means you can edit it in all the ways you can edit shapes. When you're done editing, you can regroup all the parts again.
For details about editing groups, including locked shapes within a group, see "Working with Groups."
A connector line shows through text even though the text background is solid.
If you used the technique in the previous section, "Adding a Background Behind Text," to add a solid-color background to a label, but the connector line still shows through, the problem might be with the shape's stacking order. The label needs to be on top of the connector. If the connector is on top, its line will continue to show. To adjust stacking order, select a shape, and then choose Shape, Order, Bring Forward. If necessary, repeat until the line no longer appears.
Figure 14-13. Some network shapes are actually metafiles, as indicated in the Special dialog box (Format, Special). You may have to subselect the metafile in a group.
Now you're ready to edit your shape, but where should you do it? If you edit a shape on the drawing page, you're changing just that shape. If you want to make the same change to a dozen shapes, you don't want to edit them one by one. Here are some options:
Methods for changing the look of connectors in a network diagram vary depending on the shape you use. All of the assorted connector shapes, including lines you draw with one of the drawing tools, are instances of what's called a 1-D shape in Visio. Among other things, this means that any topic in this book about 1-D shapes applies to network connectors as well. You can work with 1-D shapes or connectors as follows:
For details about how text works on labels, see "Adding Text to Lines and Connectors."