All short cut keys can be found by examining the menus.
Note For lines and wires if the shift key is held then they are kept
horizontal or vertical
To drag the display around click the right mouse button and hold -
drag to move the schematic.
A pop up menu is available from within the schematic - click and release the right mouse button within the schematic window. This has the controls for the whole tool (the same as the main menu system).