10.3 Preferences

The VEGA ZZ main settings can be changed using the dialog box accessible selecting Tools -> Preferences menu item. The parameters are automatically saved closing the software in the ..\Vega\Data  directory creating a glprefs.n where n is the number of the current session/port. Some settings requires to restart the program showing  a request dialog window.
The settings are classified in Main, Glass windows, Energy, Surface and Misc and they are accessible in their specific tab:

Main tab   

10.3.1 Main settings

In this tab you can change the interface language used by VEGA ZZ. The Language field could be auto (automatic language selection), english (built-in) and italiano. Any other language could be used if it's correctly installed in the ...\VEGA ZZ\Locale directory. For more information about the language translation see language localization appendix.
Checking/unchecking the Use sound effects field, it's possible to enable/disable the sound effects used when a dialog window is shown or when a a calculation is finished.
Use the maximum number of CPUs is active only if more then one or a multi-core CPU is installed in the system. If it's checked, all system CPUs are used by VEGA ZZ otherwise it's possible to change the number of CPUs reserved to the software.
Clicking the Default button, the parameters of this tab are reverted to the default values.

     

10.3.2 Glass windows settings

Checking Enable the glass windows, all windows appears transparent allowing to see the below layers. This option requires Windows 2000 or greater to work properly. With the above releases it doesn't have any effect. The Max. alpha slider sets the transparency (alpha bending) when the windows are active (0 = full transparent, 255 = full opaque). The Min. alpha slider sets the transparency when the windows aren't active (the windows don't receive the input focus). The Open alpha slider sets the starting transparency when a new window is open and the Fade time slider sets the time in ms for the animated fade-in and fade-out operations.
To revert to the default values of this tab, click the Default button.

  
     
 

10.3.3 Energy settings

In this tab it's possible to change the parameters used in the non-bond energy evaluation (e.g. evaluation of the interactions) such as the Dielectric constant, the Cut-off distance and the Energy threshold. Clicking the Default button, the energy parameters return to the default values.

     

10.3.4 Surface and volume settings

This tab allows to set the default parameters used in surface and volume calculations (e.g. MD analysis and surface visualization) such as the Probe radius, the Dot density and the Mesh size.
To revert to the default values of this tab, click the Default button.

  
      
  

10.3.5 Miscellaneous settings

The Bond tolerance field allows to change the overlap of the covalent radii used in the connectivity calculation (for more information click here).
The Chart zoom factor field changes the Graph Editor scale factor.
The Solvatation radius field sets the default value of the radius used to solvate the molecules (see add solvent cluster).
The Mopac keywords field defines the default keywords used in Mopac calculations (see Mopac calculation).
The Default button reverts to the default values.