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zooming and scrolling

ctrl mouse scrollzoom in or out around the mouse pointer location
ctrl +zoom in around the mouse pointer location
ctrl -zoom out around the mouse pointer location
ctrl 1reset the zoom factor to 1
ctrl 0zoom such that the whole diagram width fits on the canvas
mouse scrollscroll the diagram up or down
shift mouse scrollscroll the diagram left or right
shift down arrowscroll the diagram down
shift up arrowscroll the diagram up
shift right arrowscroll the diagram right
shift left arrowscroll the diagram left

dragging

ctrl mouse dragdrag the canvas
mouse drag on headerreposition the header element

selecting

mouse click elementselect the element
eventselect the event and send its file location to the IDE
header(de)select the corresponding lifeline
lifeline(de)select the lifeline
eligible buttonsend the eligible event to the IDE
mouse click canvasdeselect any event
up arrowselect the previous event
down arrowselect the next event
left arrowshift the focus on the selected event to the left
right arrowshift the focus on the selected event to the right

save

ctrl ssave the diagram as an svg file