What is the function of the Portal Option called Portal Option  Display Only Marks for Teacher, Parents and Students (Applies to SBG Grades and Gradebooks)

When the Portal Option  Display Only Marks for Teacher, Parents and Students (Applies to SBG Grades and Gradebooks) is enabled, all existing and new Standards Based Grades gradebooks in this school will apply the following:

• The Gradebook Option Hide the Overall Percentage/Trend Analysis will also be enabled and read-only.
• The Gradebook Option Display the Final Mark will be deselected and read-only.
• Gradebook assignments will only display their mark values.
• Final Marks will be in Read-Only mode and therefore will not have the Restore School Recommended Defaults button or the Display the Final Mark to Me option.