**This will create a graph of data points, including a legend and the
regression coefficients (slope and intercept) for a straight line.
Print the page by slecting "print" under "File" in the browser's menubar.**

**Click on "select graph type".**

**Up to 4 lines may be graphed as:**

**1. PV vs V (constant T)**

**2. V vs t (constant P)**

**3. P vs t (constant V)**

**To create a graph, the data table must show 3 successive points at
the same T, P or V.**

**It is not necessary to pre-select the data set for the graph.
The program will search the data shown in the table and will plot the first
four sets meeting the selected criterion.**

**Data may be excluded by using the mouse to edit the data table before
clicking on "graph data".**

**To restore the complete set of data, click on "close" beneath the
data table, then on "Show Data".**