Scrolls vertically the drawing area. You can also scroll outside the current size.

Scrolls horizontally the drawing area. You can also scroll outside the current size.

Zooms into or outof the drawing area.

(drag and drop file into document area) Tries to open file as Qucs schematic or data display.

Selects the element below the mouse cursor. If several components are placed there, you can clicking several times in order to select the wanted one.

Allows more than one element to be selected, i.e. selecting an element does not deselect the others. Clicking on a selected element deselects it

Clicking on a wire selects a single straight line instead of the complete line.

(double right-click) Opens a dialog to edit the element properties (The labels of wires, the parameters of components, etc.)

Place a new instance of the component onto the schematic.

Rotate the component. (Has no effect on diagrams.)

Sets the starting/ending point of the wire.

Changes the direction of the wire corner (first left/right or first up/down).

(double right-click) Ends a wire without being on a wire or a port.

Place the elements onto the schematic (from the clipboard).

Rotate the elements.

Selects file.

Opens file.

Displays menu with: open, rename, delete, delete group

Deletes the selected elements or enters the delete mode if no element is selected.

Changes the position of selected markers on their graphs. If no marker is selected, move selected elements. If no element is selected, scroll document area.

Changes the position of selected markers on more-dimensional graphs. If no marker is selected, move selected elements. If no element is selected, scroll document area.

Changes to the next open document (according to the TabBar above).