The Layout Page gives you a grid view of the columns that will show in your report and the way they are compiled.

Column	Description
Drilldown	Clicking the will open the Report Template Column Properties wizard.
Visible	Tick to make this column show in the report
Column	The database field the column is referencing
Type	The Type of data this column displays. Can be Boolean(True/False), Code(finPOWER Connect ObjectId), Currency, Date, DateTime, Number, Text.
Width (twips)	The size of the column in twips (In printing terms, there are 567 twips to a centimeter and 1440 to an inch)
Scale Weight	Columns are scaled according to their Scale Weight value compared to the total Scale Weight.
Sum	Tick if you want this column to show a Sum Total at the bottom.
Heading	The actual Heading that will be displayed at the top of each column in the report.