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Created: March 30, 2021 | Updated: August 12, 2021
Solution Details
Here's documentation for the PCB panel:https://www.altium.com/documentation/altium-designer/pcb-pnl-pcbpcb-ad
At the top of the PCB panel, there is a drop down menu (pull down list) to select from Normal, Mask, or Dim. Changes will take effect for the next item you click in the lists below or you can click the "Apply" button that is just above the pull down list. You can read this section of the documentation for more detail:
https://www.altium.com/documentation/altium-designer/pcb-pnl-pcbpcb-ad#!setting-the-visual-filtering
If you choose Dim, the Dimming level can be changed in Preferences ► System ► Navigation ► Highlight Methods section. Here's the section of the document that has pictures:
https://www.altium.com/documentation/altium-designer/pcb-pnl-pcbpcb-ad#display-control
There are also Mask and Dim Settings in the View Options tab of the View Configuration Panel. Expand the "Mask and Dim Settings" in this documentation for more detail:
https://www.altium.com/documentation/altium-designer/pcb-pnl-viewconfigurationview-configuration-ad#view-options-tab
Notice that there are check boxes for Select, Zoom, and Clear Existing. You can read detail about their functionality here:
https://www.altium.com/documentation/altium-designer/pcb-pnl-pcbpcb-ad#filter-options
The zoom level can be changed with the "Zoom Level…" button which is just above the zoom option check box. This will affect a change in the Preferences in the same place as Dimming (see above.)
There are also some highlighting and mask options in the preferences that may be helpful:
https://www.altium.com/documentation/altium-designer/pcb-dlg-systemdisplayoptions-framepcb-editor-display-ad
Here's another Knowledge Base Article with similar information:
PCB Panel Selection and Highlight Controls
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