2=Change
Changes the list item. Use this option to enter the Actual parameter.
5=Display
Displays the attributes of the Actual parameter. These are the attributes of the corresponding Formal parameter of the Subentry and the attributes of the Actual parameter used.
As an Actual parameter either a Field from the Entry or a constant value (but not both) can be used. This can be entered on the "Create Actual parameter" panel that will be prompted when option "2=Change" is used on the "Work with Actual parameters" panel. It is not possible to enter a Field from the Entry as Actual parameter if the definition of this Fields does not match the definition of the Formal parameter. For Constant values there is no check done if the value entered is consistent with the definition of the Formal parameter of the Subentry. The only check performed is whether the constant value has to be numerical or not.
Using function key "F4=Prompt" on the "Create Actual parameter" panel displays a list of all Fields from the Entry with a definition consistent with the definition of the corresponding Formal parameter of the Subentry. On this "Select Actual parameter" panel one of the listed fields can be selected as Actual parameter.
Constant values can be entered in the input field "Constant value". They have to be entered directly without delimiters and can be no more than 25 characters in length. If more or less is entered than required by Formal parameter the behavior of ITP is unspecified.