DocumentationMathematicaThe Mathematica BookPrinciples of MathematicaManipulating Notebooks
2.11.14 Advanced Topic: Global Options for the Front End
In the standard notebook front end, Mathematica allows you to set a large number of global options. The values of all these options are by default saved in a "preferences file", and are automatically reused when you run Mathematica again.
Some typical categories of global options for the front end.
As discussed in Section 2.11.4, you can access global front end options from the kernel by using Options[$FrontEnd, name]. But more often, you will want to access these options interactively using the Option Inspector in the front end.