The Drawing mode toolbar Controls how the mouse works on a diagram, display and sizing
You can move single symbols or groups with the cursor keys. Hold down shift and a cursor key to move the objects in larger steps.
With a single object hold down Ctrl and a cursor key to change the size of the object. Note - Escape hides the Symbol Toolbox if it is showing
Note Creation Mode is set by clicking the Drag to Create Note button, then afer you drag across the diagram you can enter the tagname and text.
You can also set the Object, Connection, Drag or Hover mode with the menu that appears when you right click the diagram