A sidebar to the “Apple’s Lisa: A personal Office System” report published in January 1983, pp. 12.

Data can be portrayed in the form of pie charts, bar charts, line charts, and scattergrams designed to fit an entire page, one-half, one-third, or one-quarter of the page. The central chart is produced in a predictable series of steps, as the following description of the generation of a bar chart shows:

	Each entry in column A (e.g., A1, A2,... Ax) becomes a separate label along the horizontal or X-axis.
	Each entry in column B becomes a separate vertical bar associated with each label. A positive number generates a bar above the X-axis, while a negative number produces a bar below the axis.
	Each entry in column C becomes a separate vertical bar abutting the previous bar above each label, and the same is true for any data in columns D, E, and so forth.
	The height of the vertical or Y-axis is automatically adjusted so that the tallest of the bars scales about three-quarters of the total height of the chart. Scaling numbers are automatically added to the Y-axis based upon the data values.
	Beginning with column B, a different pattern is used to fill each bar, and that same pattern is used to fill a related legend box located to the right of the chart.

The process of generating line charts and scattergrams is very similar except for the different representation, and you can easily switch from one presentation form to the other using the same spreadsheet data. You simply select the appropriate form from the “Graph” list in the LisaGraph menu bar at the top of the screen.

Pie charts, on the other hand, are drawn using the data in column B and the labels in column A; other columns are intentionally ignored.