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 Documentation / Mathematica / Other Information / Menu Commands / Format Menu  /
Option Inspector

▪ The Option Inspector lets you view and set all option values for cells, notebooks, and global preferences.
▪ Keyboard shortcuts: O ; O O
▪ The first pop-up menu (labeled Show Option Values For) lists "global", "notebook", "selection's style" and "selection". This menu chooses the scope in which your options will take effect. Some options are dimmed when they do not apply to the scope you have chosen.
Global
Sets options for the front end generally.
Notebook
Sets options for the whole notebook.
Selection's style
Sets options in the notebook's style sheet. For example, if you have selected a cell having the Input style, and the notebook is using the Defaul style sheet, the options you set will change the definition of the Input style in the Default style sheet.
Selection
Sets options for the selected cells or for characters in a cell.
▪ The second pop-up menu lists options "by category", "alphabetically", and "by text".
▪ The "Lookup" box finds the option you type in.

1.Enter an option name, or part of its name.

2. Click Lookup, or press Return.

The Option Inspector goes to the first matching option. Click Lookup or press Return again to go to the next match.
▪ Each line in the list of options gives the option name, followed by its current value. Change the option's value by choosing from the pop-up menu at the right, or by selecting the value itself and typing over it. A symbol in front of the option name indicates that the listed option and its value is set in the selected character, cell, style or notebook.