# Replace tag placeholders in test display mode

The Test Display dialog box appears when testing a display if one or more tag placeholders are defined in the display. You can specify a parameter file or list to replace them with the actual tag names. You can also click Cancel to quit the display testing and go back to the Edit mode.

Tip: | # followed by a number is reserved for tag placeholders. It is not recommended to use this format in other cases, such as static text. If you must use # followed by a number in static text, add a space or _ between # and the number. For example, enter #_3 or # 3.

## Parameter File

Select this option if the parameter values will be provided by a parameter file.

Click the browse button and select a file in the Component Browser. The parameter file assigns tags to tag placeholders in the display when the display runs.

## Parameter List

Select this option if the parameter values will be provided by a parameter list.

All tag placeholders in the display are listed. Enter a tag name or value for the placeholder. You can also click the browse button to select a tag.

## See also

Use parameter files and parameter lists

Create parameter files

Create parameter lists