Parent page: Schematic Objects

Use Lines to annotate and enhance the schematic.


A line is a non-electrical polyline drawing primitive. Lines are used for adding reference information to a document, such as building graphical symbols, custom sheet borders and title blocks, and annotating the schematic.


Lines are available for placement in both Schematic and Schematic Library Editors:

  • Schematic Editor - click Home | Graphical Elements |  from the main menus.
  • Schematic Library Editor - click Home | Place |  from the main menus.


After launching the command, the cursor will change to a cross-hair and you will enter line placement mode. Placement is made by performing the following sequence of actions:

  1. Click or press Enter to anchor the starting point for the line.
  2. Position the cursor then click or press Enter to anchor a series of vertex points that define the shape of the line.
  3. Use the Backspace or Delete keys to remove the last line segment placed.
  4. After placing the final vertex point, right-click or press Esc to complete placement of this line.
  5. Continue placing further line objects, or right-click or press Esc to exit placement mode.

While attributes can be modified during placement (Tab to bring up associated properties dialog), keep in mind that these will become the default settings for further placement.

Placement Modes

When placing a line there are five placement modes. The mode specifies how corners are created when placing lines and the angles at which lines can be placed. During placement:

  • Press Spacebar to cycle through the 90 Degree Up, 90 Degree Down, 45 Degree Up, 45 Degree Down and Any Angle modes. You can change modes at any time during line placement.
  • In all modes other than Any Angle, the line segment attached to the cursor is a look ahead segment. The segment you are actually placing precedes this look ahead segment

Graphical Editing

This method of editing allows you to select a placed line object directly in the workspace and change its size and/or shape graphically.

When a line object is selected, the following editing handles are available:

Selected Line, ready for graphical editing

  • Click and drag A to reposition the end points of the line.
  • Click and drag B to move a line vertex. The end points will remain anchored.
  • Ctrl+click and drag on a line segment to grab that segment and reposition it. The end points and other vertices will remain anchored.
  • Right-click on a vertex point and choose the Edit Line Vertex n command to access the Vertices tab of the PolyLine dialog, with the entry for the nth vertex selected ready for editing.
  • Ctrl+click and hold on a line segment, then press Insert on the keyboard to add a vertex at that point.
  • Click and hold on a vertex, then press Delete on the keyboard to remove that vertex.

To move an entire line line, click and hold on the un-selected line then move to the new location.

An object that has its Locked property enabled cannot be selected or graphically edited. Double-click on the locked object directly then disable the Locked property to graphically edit the object.

Non-Graphical Editing

The following methods of non-graphical editing are available:

Via an Associated Properties Dialog

Dialog page: PolyLine

This method of editing uses the PolyLine dialog to modify the properties of a line object.

Edit the properties of the Line in the PolyLine dialog.

The dialog can be accessed during placement by pressing the Tab key.

After placement, the dialog can be accessed in one of the following ways:

  • Double-click on the placed line object.
  • Place the cursor over the line object, right-click then choose Properties from the context menu.
The PolyLine dialog includes a Vertices tab, where you can edit the individual vertices of the currently selected line object.

Using a Line as an Arrow or Marker

The PolyLine dialog provides several options that can be used to change the style of a line. Using the Start Line Shape, End Line Shape, Line Shape Size, Line Width and Line Style options, a large variety of arrow and marker designs can be achieved.

Using dedicated options, a large variety of Arrow and Marker designs can be achieved.

Via an Inspector Panel

Panel pages: SCH Inspector, SCHLIB Inspector

An Inspector panel enables you to interrogate and edit the properties of one or more design objects in the active document.


  1. A line is purely a drawing object. To make an electrical connection between points in your schematic, use the wire object.


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