Hi WD,
That's the Net Worth template from Numbers 2 (Numbers '09).
Here's a view of the side bar, listing the sheets and the tables and charts on each sheet:

The three tables on the Assets sheet and the two tables on the Liabilities sheet are identical in terms of structure.

Each table has a distinct name, stating the category of Assets or Liabilities to be recorded in that table
Each has two columns and enough rows to list the individual assets or liabilities, plus a Header row to hold the labels for the two columns and a Footer row to hold the total for that category.
Column A is a Header column (required to provide labels for the pie chart on that sheet).
Each table has a single formula, SUM(B), entered in column B of the Footer row.
Data for the pie chart on the Assets sheet is taken from the Total Assets table on the Overview sheet.
Data for the pie chart on the Liabilities sheet is taken from the Total Liabilities table on the Overview sheet.
The Overview sheet contains two tables and two bar charts.
The structure of the three tables, two of them (Total Assets, and Total Liabilities) with identical structure.
Each has a Header row, a Footer row, and the number of body rows to hold the data gathered from the tables on the sheets they summarize.
Each has a header column, listing the categories (table names) from which the data on that row is brought, and a body column containing that data.
Each of these table has two formulas, one of them repeated.
In column B of the Footer row: SUM(B)
In B2, and the body cells below that: Table-name::cell-address
Example: In B2 of Total Assets: =Large or Fixed Assets :: B5
The third table, Total Net Worth, has a single cell, A1, containing this formula:
=Total Assets :: B5-Total Liabilities :: B4
The two bar charts on this sheet get their data from column B (body cells) of their table and their labels from the header row and header column of their table.
Interms of data structure, the two templates are identical. The only table that is different is Total Net Worth. An extra column has been added to that table in the newer version, pushing the calculation into column B. The new column contains a copy of the table's name, and the actual Table name is not shown above the table. An aesthetic change, to better fit the new layout of the information.
All formulas are the same in both versions.
Regards,
Barry