I know diagonal lines can be drawn on schematics. After checking the manual, still can not find it.
While adding a wire (is that what you mean by a line in the schematic?) press the F3 key and change the Draw Mode from the default of "route" to something that allows diagonal or any angle wires.
I think this is what you are looking for, but if not, supply more details and you might get further help.
This is exactly what I am looking for. Thanks a lot.
I preffer another way. When I drawing a wire I click the right mouse button until schematic editor will be entered into "Any angle" mode.
It is the Right Mouse Button (RMB) to "Toggle Drawing Mode" using the IC5141 release, but this is now the Middle Mouse Button (MMB) in the IC61x releases.