These are global settings affecting all pages.
Toggles the display of keyboard shortcuts at the end of menu entries.
Change the way in which angles are displayed for example either 45° or π∕4. An irregular angle such as 44° is displayed numerically: 0.768. An angle of 180° is always displayed as π.
The meaning of the word “trapezium” has different meaning in different countries, hence the need for this option.