After registering an Entry as Subentry the values actually used to make the connection between the Entry and Subentry must be filled in. These values are called Actual parameters. When a Subentry is registered, the Formal parameters of this Entry are used to build an empty list of Actual parameters. Using option "18=Actual parameters" with a Subentry on the "Work with Sub entries" panel displays the list of Actual parameters on the "Work with Actual parameters" panel.