Toggle Rendered View
Toggle rendered view for one or all Javadoc comments.
Toggle Rendered View ⌃⌥Q (macOS) / Ctrl+Alt+Q (Windows/Linux) to show comments in reader mode. Right-click the gutter icon and select Render All Doc Comments if you want all comments to show in reader mode.
Alternatively, in the Settings dialog ⌘, (macOS) / Ctrl+Alt+S (Windows/Linux), go to Editor | General | Appearance and enable/disable the Render documentation comments option.