Patent ID: 7519935

Claim:
A circuit diagram drafting system for drafting a circuit diagram comprised of a plurality of circuit components and connections connecting terminals of the circuit components, the circuit diagram drafting system comprising: a display unit to display the circuit diagram; a managing unit to attach and manage a line marker on a connection of the circuit diagram displayed on the display unit based on a line marker set unit selected from a plurality of line marker set units, wherein the set units include at least a line unit forming a route, inter-terminal unit designating connected terminals, and a net unit, the net unit includes connections spanning a plurality of sheets through signal connection terminals connected to terminals of the circuit components, and the line marker set units include a connection unit limited to a single sheet; a jump processing unit to start processing displaying a terminal of another circuit component connected to a terminal or signal connector when the terminal of the circuit component or signal connector is selected, wherein the jump processing unit performs processing for displaying a list of terminals of the other circuit components and displaying a selected terminal from the list and is set to pass over a two-terminal component, and two-terminal components are not displayed with the other circuit components in the list.