Editor Preferences
Visual preferences for the viewing atoms, bonds, and orbital surfaces can be customized.
The preference dialog box for atoms, bonds, and isosurfaces is invoked with File:Preferences or on the toolbar with 
. These settings are remembered between sessions on the same computer on the same browser for the same WebMO user.
Some visual preferences for molecular orbitals may be set when molecular orbitals are being displayed from the Options accordion tab. These settings are remembered only for the current session.
Customizing Atom and Bonds
Preferences Display Tab
Atom/Bond Size (%): Customize size that atoms and bonds are drawn
Labels: Label atoms with elemental Symbol, atom Index, atom Charge, or nothing
Background: Choose the background color of the editor (white is useful for saving the editor window as an image with File:Save Image... and pasting into other documents)
Display Unit Cell: Display the unit cell for a system with Periodic Boundary Conditions
Customizing Isosurfaces
Preferences Isosurfaces Tab
Isosurface values: Specify value of isosurface; smaller values result in larger surfaces
Transparency: Specify transparency of isosurfaces
Grid Points: Select number of points at which isosurfaces values are computed; larger values result in smoother surfaces and more accurate representation of nodes
ESP accuracy: Select method of calculating electrostatic potential
Customizing Colors
Preferences Colors Tab
Element: Select the atom from the drop down menu, and then choose its color
Unit Cell: Choose the unit cell color if displayed
Orbitals: Choose the colors of occupied and unoccupied molecular orbitals, and electronic density surface
Color scheme: Choose color scheme for mapped properties, e.g., electrostatic potential
Customizing Orbitals
Orbital Options Settings
Display molecule : Specify whether molecule and/or isosurface is to be displayed.
Mapped Property Range: Automatically use full-range, or manually specify range (useful for comparing different molecules)
Slice plane: Specify location of a plane onto which values are mapped.
Restoring Defaults
WebMO default settings can be restored for all tabs on a browser/computer/user by clicking the Defaults button followed by the OK button.