Trace Excursion: The trace excursion is a scale factor applied to the data when displaying wiggle traces.  Trace excursion is combined with the Scale Mode to determine a scale factor that varies the deflection of the wiggles.  For example, if you have a trace excursion of 3 and a  Scale Modeof  "File Peak" any values that are at the file peak will deflect 3 traces from the trace center.

Excursion Step: This is the amount to increase or decrease the trace excursion by when hitting the Increase Wiggle Excursion icon on the Scaling Toolbar.  The default value of 0.25 means increase the excursion by a quarter of a trace each time the button is depressed.

Trace Clipping: The trace clipping value specifies a maximum deflection for the wiggle.  Any values past this deflection will be clipped.  For example, if you have a trace clipping value of 3, but a wiggle that would normally deflect 4 traces, the wiggle will be truncated at 3 traces off center.

VD Data Range (%): The variable density data range is used to specify the percentage of the data that is mapped to the color palette.  The data range is specified by the Scale Mode.  Values less than 100 % will brighten the data, while values greater than 100 % will wash out the data.  For example, if you have a  Scale Mode of " File Peak", a VD data range of 100 % and a data file with values from -10,000 to 10,000 all the data will be mapped, and -10,000 will be the value mapped at the start of the palette and 10,000 will be the value mapped at the end of the palette. If you then set the VD data range to 50 % then -5000 will be the value mapped at the start of the palette and 5000 will be the value mapped at the end of the palette.

VD Step (%): This is the amount to increase or decrease the amplitude of the variable density component of the seismic display when hitting the Increase VD Amplitude icon on the Scaling Toolbar.  The default value of 25 means increase the amplitude by 25 percent each time the increase button is depressed, or decrease the amplitude by 25 percent each time the decrease button is depressed.

Scale Mode: The scale mode is used to specify values to scale the data against for both wiggle and variable density displays.  There are 7 possible scale modes.

User Minimum Amplitude: The user minimum amplitude is the minimum value used to scale against when Scale Mode  is set to  "User Defined".  This is most useful when viewing data that is not centered about zero.

User Maximum Amplitude: The user maximum amplitude is the maximum value used to scale against when Scale Mode is set to  "User Defined". This is most useful when viewing data that is not centered about zero.

Overlay Scale: This allows the user to scale the overlay data independently of the underlay data.  If this option is set to Use Scale Mode the overlay is scaled the same as the underlay.  To scale the overlay independently of the underlay select an option other than "Use Scale Mode".  The scale modes are the same as for the main underlay.

Overlay Minimum: The overlay minimum amplitude is the minimum value used to scale the overlay data when Overlay Scale  is set to  "User Defined".  This is most useful when viewing data that is not centered about zero.

Overlay Maximum: The overlay maximum amplitude is the maximum value used to scale against when Overlay Scale is set to  "User Defined". This is most useful when viewing data that is not centered about zero.

Override Colorbar Increment: This allows the user to set increments for posting on the colorbar.