The Wolfram Language uses its knowledge of the symbolic structure of your input to display it with semantics-directed syntax coloring and other forms of styling. You can use options to control the details of this behavior, either programmatically or through the Preferences dialog.

Preferences ▶ Appearance — set details of syntax coloring

ShowAutoStyles — whether to display syntax coloring and other automatic styling

ShowAutoSpellCheck — whether to highlight spelling errors

TranslationOptions — control the appearance of code translations

CodeAssistOptions — control autocompletion and other code assistance features

AutoOperatorRenderings — automatic renderings for operator strings

Preferences ▶ Evaluation — formatting of numbers (digit blocks, default precision, etc.)

AutoMultiplicationSymbol — when to display × for number multiplication

ShowStringCharacters — whether to display quotes around strings

ShowSpecialCharacters — whether to turn \[…] sequences into special characters

DelimiterAutoMatching — whether to match delimiters as they are typed

InputAliases — definitions for arbitrary aliases

InputAutoReplacements — automatic character sequence replacements to do

AutoItalicWords — words to automatically make italic

SingleLetterItalics — whether to make single-letter mathematical variables italic

AutoIndent — whether to add an indent after a newline is entered

TabSpacings  ▪  TabFilling

DelimiterFlashTime — how long to flash matching delimiters

ShowCursorTracker — whether to display a real-time spot if the cursor jumps