Setting Values for Parameters
The value for each parameter in a page comes from the link to that page. This can be the Menu Item tag or it can be a page hotbox or page button widget.
Setting a parameter value in a page Menu Item and in a page button widget
If you create a link to the page but don't provide values for the parameters then your operators will be prompted every time they open that page.
"Underspecified" is programmer-ish for "value not provided"
As a general rule you should provide values for all the parameters in a page in every navigational link that you give to operators.
At the same time that you edit the navigation links to add parameter values, it is a good idea to change the label or title of the link so that operators will know what to expect when they open the page.
Advanced VTScada developers can use DecodeParms to query the parameter values of existing MenuItem tags.
