When you file multiple documents in in the same filing, one of the documents you
file must be designated as the primary document. The primary document tells the
Colorado PUC which document constitutes the principal purpose of the filing.
For example, suppose you file a new application along with several supporting
exhibits. The main purpose of the filing is the application. Consequently, the
application document is the primary document.
Normally, as you enter documents in a filing, the first document you enter is the
primary document. However, before you complete the filing, you have the ability to
change the primary document in the filing as when you forget to enter the most
important document first. On the document panel of the filing wizard, toward
the right of the screen you will see that each document has a little up arrow
button (see figure 1).
Figure 1
Pressing the up arrow button on any document moves the document to the top of
the list, making it the primary document.