Object-Specific Layout Rules
As the name suggests, object-specific PCB rules apply only to the selected object. Only Selector-Based Layout Rules can be applied to multiple objects.
Quick Method: Using the Toolbar (Recommended)
Ask Flux to add a layout rule to one object. Name the object by its designator or net name.
Set the trace width of the VBUS net to 0.5 mm.
Add a 0.3 mm keep out to pad 1 of U2.
Rotate the 3D model of the M3 standoff H1 by 90 degrees and move it 2 mm to the right.
You can also do it in the editor:
For individual objects, the fastest way to modify layout properties is to use the toolbar, which appears automatically when you select an object in the PCB editor.
Traditional Method: Using the Inspector Panel
Ask Flux to add or change the rule on the object, and tell it the value.
Add a solder mask expansion of 0.1 mm to via TP3.
Set the corner radius of the board outline to 3 mm to match the enclosure.
You can also do it in the inspector panel.
To add an object-specific rule through the inspector panel:
Select an object
Find the "Layout rules" in the right-side menu
Click on "Edit" -> "Add"
Search for the desired rule and add it.

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Selector-Based Layout RulesIdea and requirements
Schematic Design
PCB Design
Wire Harnesses
Simulation and Analysis
Documentation and launch
Import and Export
Collaboration
Developer API and user code