National Instruments BridgeVIEW 用户手册

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页码 455
Chapter 4
Human Machine Interface
4-18
© National Instruments Corporation
You also can enter the name of the tag you want to use. The tag control 
performs a Type Look Ahead as you type, and displays the closest tag or 
group name to what you enter. By default, the tag control does not allow 
you to enter a name that is not contained in the current 
.scf
 file. 
You can configure each tag control, indicator, or constant to permit entry of 
names not contained in the current 
.scf
 file by right-clicking on the tag 
object and selecting Allow undefined tags, as shown in the illustration 
below. If a tag name is not in your 
.scf
 file, you cannot select it.