This page allows you to modify tree variable values and whole arrays of tree variables. The mechanics of this page are pretty much the same as the parameters page, so see Using the Parameters page for more.
The page is shown below:
The differences between the parameter and variable page are:
Since variables don't associate directly with spectra, the lines don't have a button to change spectra.
There are controls at the bottom of the page that allow you to save and restore only the tree variable values to and from file.