The Layout section contains selections for the Segment and 
Period information pertinent to executing the report. These property segment 
fields can be noted as “Defined in Lines” or “Defined in Columns” and will be 
read-only, informational values. This indicates that the parameter for executing 
the report has been defined in the associated Line or Column 
Definition.
In addition, Segment parameter options can be associated in 
the Report Definition Properties Pane and can be set to a specific value – using 
the ellipsis button to select a value from the. These will act as a “default” 
hard-coded Prompt when the user executes the report.

If the value is left <Blank>, it indicates that 
the user can choose the parameters for which to run the report based on their 
current Assignments.