• Highlighting Valence Errors, when checked, highlights atoms having wrong valences with red underline. This option can be set separately for MarvinSketch and MarvinView.

    • Automatic Lone Pair Calculation calculates lone pairs automatically. Make sure View > Misc > Lone Pairs is checked to see the result.

    • Validate S-groups At Creation disables the S-group types in the drop-down list which would not yield a chemically correct structure. For more information on S-groups click here.

    • Carbon Labels options determine the condition of displaying C labels on carbon atoms.

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      Always Never At straight angles and implicit H atoms
    • Ligand Orders options determine in which cases to display the ligand order information for an R-group.

      • Always;

      • Never;

      • On R-groups with definitions