Documentation tool window
When you use Ctrl+Q (View | Quick Documentation), the Documentation popup is shown.
Then, if you click in the upper-right corner of the popup, the popup transforms into a tool window. As a result, the tool window becomes available in the View | Tool Windows menu.
To turn the tool window back into a popup, click again.
|Left or Right||Switch to the previous or next documentation page (e.g. after using hyperlinks).|
|Shift+F1||View external documentation in the default browser.|
|F4||Switch to the item (e.g. source) that corresponds to the documentation page currently shown.|
|Turn the Auto-update from source option on or off. When the option is on, the information in the tool window is synchronized with your navigation in the editor and other places in the UI.|
|Click this icon to show the font size slider. Move the slider to increase or decrease the font size as required.|