Configuring Schematic Comment Object Properties in Altium Designer

Parent page: Comment

Schematic Editor object properties are definable options that specify the visual style, content and behavior of the placed object. The property settings for each type of object are defined in two different ways:

• Pre-placement settings – most Comment object properties, or those that can logically be pre-defined, are available as editable default settings on the Schematic - Defaults page of the Preferences dialog (accessed from the  button at the top-right of the workspace). Select the object in the Primitive List to reveal its options on the right.
• Post-placement settings – all Comment object properties are available for editing in the Parameter mode of the Properties panel when a placed Comment is selected in the workspace.

Location (Properties panel only)

• (X/Y)
  • X (first field) - the current X (horizontal) coordinate of the reference point of the object, relative to the current workspace origin. Edit to change the X position of the object. The value can be entered in either metric or imperial; include the units when entering a value whose units are not the current default. 
  • Y (second field) - The current Y (vertical) coordinate of the reference point of the object, relative to the current origin. Edit to change the Y position of the object. The value can be entered in either metric or imperial; include the units when entering a value whose units are not the current default. 
• Rotation - use the drop-down to select the rotation. Choices are: 0 Degrees, 90 Degrees, 180 Degrees, and 270 Degrees.

Properties

• Component (Properties panel only) - displays the name of the associated component. Click the Component link to open the Part Properties panel, where you may edit component options, as well as the comment itself, which will be defined in the Comment field of that panel.
• Name - enable this field by clicking the visibility icon () to add the prefix "Comment:" to the comment value itself. Doing so visually distinguishes and confirms that the text value is a comment within the schematic document.
• Value - displays the comment name itself. Toggle the () ​to show/hide the value.
  • Autoposition -  check to enable auto-positioning, meaning that the text will remain in the chosen position as the component is moved and rotated.
  • Lock Parameter - check to lock the parameter, which prevents the value from being edited from the Properties panel or schematic document.
  • Allow Synchronization with Database -  enable to synchronize with the database. This option is used to control if the comment can be updated. By default, this option is enabled to always allow synchronization with the source library/database. You may disable this option to prevent the comment from being included in an update process.
• Font - use the controls to select the font, font size, font color, and add any desired special characteristics to the font, such as bold, italics, and underlines.
• Justification - click the arrows to configure the justification of the text or circle to center.  
• Override Library Primitive (Preferences dialog only) - enable this checkbox to override the primitives defined for the comment object in a library. Therefore, when a component is placed, it will adopt the primitives that you have defined in the Preferences dialog, rather than those primitives that have been defined for the component in the library.