Selecting this item saves the current configuration for future use. For example, if you have the Annotation window open and you select Save settings , then the Annotation window will be open the next time you run MeshTV.
The things MeshTV saves when you save your settings include: the positions and dimensions of pop-up windows, whether the pop-up windows are visible or not, whether the pop-up windows are posted, and default settings for the attributes of all pop-up windows. MeshTV also saves items (e.g., perspective, full frame, bounding box navigation, and spin mode) from the menu that appears when you right click on the visualization window. Things not saved include: the current visualization window, currently open files, currently active plots, and the number and locations of the output displays. An important thing to note is that the settings saved for the plot and operator attribute windows are the default settings, not the settings of the currently selected plot.
There are many different settings which MeshTV saves, so be aware that if you change the state of a radio buttons or text field and make the values the default by pressing the Make default button, these new values will probably be saved and used as the defaults the next time you run MeshTV. Some values are saved, like those in the Preferences window, and others are saved by virtue of having been applied-- there is no Make defaults button in the window.
The "safest" way to use this option is to start MeshTV, change the settings you wish to save, and then select Save settings . This assures that you will only save the options you wanted to save.