MarkupFormatting Xcode Quick Help Quick Help for a symbol is shown by Option-clicking a symbol. In Xcode Command + Option + / Editor - Structure - Add Documentation Index Index Group 1 Inserting Callouts 2 Inserting Links 3 Inserting Assets 4 Formatting a Span of Characters 5 Formatting a Line of Text 6 Formatting Multiple Lines of Text 7 Escaping Special Characters 8 Comment Markers for Markup Resource Markup Formatting Reference