Tips and Shortcuts

Modifier Keys

To open the Finder Get Info window for an item, hold down Control and Option instead - Control clicking will bring up the item's contextual menu.
To open the enclosing Finder window for an item, hold down Command and double-click the item.
To remove an item or quit an application, hold down Control and Command and double-click the item.
To select an item when the "Use single-click to open" option is on, hold down Shift and click the item.
To drag a dock without using the title bar, hold down Option and click an empty area on the dock.

Keyboard Shortcuts

To navigate round a dock, use the arrow keys or type the name of an item to select it directly.
To open the selected items, press Return.
To cycle forwards through the docks press Tab (or Command-Up Arrow) and Shift-Tab (or Command-Down Arrow) to cycle backwards again.
To switch layers, hold down Command and press the Left and Right Arrow keys. Command-0 selects the Process Dock, and Command-1 to Command-9 selects the other docks.
To remove an item or quit an application, click on it and press Delete, select Clear from the Edit menu, or drag it to the Wastebasket.

Dragging

Hold down Option when you drag an item between two docks to make a copy instead of moving it.
Hold down Option when you drag a file to a folder or disk item to make a copy instead of moving it.
Hold down Command and Option when you drag a file to a folder or disk item to make an alias .
To make an alias to an item, drag the item into the Finder.

Docks, Layers & Items

To export all the docks at once, hold down Option and select "Export All Docks…". from the File menu.
To rearrange the folder tabs, hold down Option and click and drag the tab to the required position.
To open the Options window for a layer, double-click the folder tab for that layer.
To change the icon for a dock item, select it and paste an icon copied from a Finder "Get Info" window, or another dock item.

Preferences

DragThing will open a preferences file in the same folder as itself before looking in the main Preferences folder in the System Folder for one.
To force the preferences file to be checked for problems (useful if you get an error message at startup), hold down Control and Option as DragThing starts up.