Use this toPreview as you type. The preview appears in a docked window by default.
Before invokingA document must be open to use this option.
Menu pathView > Preview > Active Preview
Command nameMViewPreviewActive
Accelerator keyA (from the main menu: Alt+V > I > A)
Keyboard shortcutCtrl+F8
Options on parent menu (Preview+)Preview Tab, Active Preview, Active Preview Window (classic mode), Preview in Browser Window, Preview Server-Side Script, Preview through PHP Interpreter, Preview with Remote Files, Default Browser Window, New Browser Window