The font size for the displayed text can be chosen by clicking through the available fonts with the left mouse button while the cursor is in the FONT box (the box below the word "FONT", i.e., the box in which the current font name is displayed). Alternatively, holding the right mouse button down while in this box causes the entire menu of font options to pop up to choose from. The displayed font and font size can be changed at any time but all of the displayed text strings show up in the same font and font size.
Font size is changed by typing a number into the FONT SIZE box.
The color of each displayed string can be specified separately. The color must be chosen before the string is dropped into the scene. To pick a new color from a color palette just click on the color bar (which is blue by default).
The axis labels are set by typing the desired label into the specified box.The default is the label the x-axis "X", y-axis "Y", and z-axis "Z". The colors for each axis can be changed by clicking on the color bar for each axis. This will display a list of colors to pick from.
Arrows can be changed to a wireframe display, and the color of the wireframe modified. Set the "Objects" name to the desired arrow (see above). By clicking on MODE the display can be changed from SURFACE to WIREFRAME. Clicking on COLOR pops up a color widget for choosing colors.
NOTE: this widget has not been extensively tested.