原理图 - 断线
Parent page: Accessing, Defining & Managing System Preferences
The Schematic - Break Wire page of the Preferences dialog
Summary
The Schematic – Break Wire page of the Preferences dialog provides controls related to the behavior of the cutting tool when using the Break Wire feature. While the tool is labeled Break Wire, it can be used to break wires as well as buses and signal harnesses.
Access
The Schematic – Break Wire page is part of the main Preferences dialog that is accessed by clicking the 
control in the upper-right corner of the workspace then selecting the Break Wire entry under the Schematic folder.
Options/Controls
Cutting Length
Select one of the following options to control the length of wire that gets cut:
- Snap to Segment - choose this option to have the cutter snap to an entire wire segment.
- Snap Grid Size Multiple - choose this option to have the cutter sized to a defined multiple of the current snap grid. Enter a value for the multiplier in the field to the right from 2 and 10 (inclusive).
- Fixed Length - choose this option to create a fixed-length cutter, the length of which is specified by entering a value in the field to the right.
Show Cutter Box
Select one of the following options to control the display of the cutter box (dotted rectangular box) while in Break Wire mode:
- Never - never display the cutter box.
- Always - always display the cutter box, regardless of whether the cursor is over a wire segment or not.
- On Wire - only display the cutter box when the cursor passes over a wire segment.
Show Extremity Markers
Select one of the following options to control the display of extremity markers (at the ends of the cutter box) while in Break Wire mode:
- Never - never display the extremity markers.
- Always - always display the extremity markers, regardless of whether the cursor is over a wire segment or not.
- On Wire - only display the extremity markers when the cursor passes over a wire segment.