Select the log type under which the equation will be grouped in the Log Equation Library.

Displays the name of the equation with which you're currently working. If you've already clicked Add, the term (User) follows the equation name. User equations appear first in this drop-down list.

GeoSyn prevents you from overwriting default library equations, thus Update and Delete are inactive until you click Add to create a copy of a modified default equation. Once the copy is made, Update and Delete become available. When you click Add, GeoSyn verifies your equation is valid.

Drag terms into the Metric or Imperial equation box or simply use the panes for reference as you type directly in the Metric and Imperial boxes.

Select the output type. Internally, GeoSyn interprets sonic logs in transit format.

Drag terms from the equation options panes or simply type in these boxes. You must define each of these, although they can be identical. Click Down or Up under the Copy option to quickly copy a created equation into the blank box so that you can modify it.

In the first box, type a description to differentiate this equation from other similar equations. The description you type appears in the Log function box when you click Update or Add and it is this description that you use to select the equation from others in a drop-down list when applying the equation to a log.

Select whether equation terms are colored red, green, and blue. If selected, when you type terms in the Metric or Imperial boxes, GeoSyn applies the default colors to what you type.