Using-Altium.md

@@ -10,7 +10,7 @@
 1. Make a new project - File >> New >> Project
 1. Make a new schematic file and a new PCB file inside your project (Right click your project in the left panel)
 
-<details><summary>###Steps to Make Schematic Document:</summary>
+<details><summary>Steps to Make Schematic Document:</summary>
 
 1. To place components - open your schematic file, click on the panels button and select Components.
 
@@ -35,7 +35,7 @@ Once you have all your components on the schematic, you can connect them using t
 </details>
 
 
-<details><summary>###Steps for PCB Document:</summary>
+<details><summary>Steps for PCB Document:</summary>
 
 1. Once your schematic is finished, switch to the PCB document. In this document, there are three different ways to view the board.
     - If you type the number “1”, you will be able to edit the board shape
@@ -73,11 +73,22 @@ Once you have all your components on the schematic, you can connect them using t
 1. The board may be bright red, or look strange. Open up Tools, highlight over Polygon Pours and click on Shelve to hide these polygons. Always remember to repour your polygons by clicking on repour all under Tools >> Polygon Pours. You can also restore your shelved polygons.
 </details>
 
-<details><summary>###Finishing Touches:</summary>
+<details><summary>Finishing Touches:</summary>
+
 - Traces:
+    
     - Sometimes you want to use thicker traces. You may want to use this when the trace is for power - like connecting 3.3V or 5V. To change the width of the traces in PCB mode, select the trace you want to edit, then click Tab to make sure it selects the entire trace. Next, open the Properties panel on the right and change the Width (under Properties section) to the size you want (20mil is a good option).
     - No sharp corners
 
 - Design rules:
+    These rules are what the computer uses to judge whether your board is valid or not. The built in rules are fine for some things, but you can adjust these rules when you need to. If you have colorful parts that have little messages or numbers on them, you likely are breaking a design rule.
+    - Click on Design, then Rules to access the rules
+    - If you want to assign your differential pair to a class, go to Design, then Classes
+    - Go down to Differential Pair Classes, then add a new class.
+    - Select the pair you want to put into this class (the pair name is the word in the nets on the diff pairs before the _P and _N)
+    - Click the >> button to put it into this class
+    - Clearance Rules - these set how much clearance you want to give different components (like space between a route and a pad). Under Clearance Rules, select the Ignore Pad to Pad clearances within a footprint. This will clear up if there is a clearance error within a component
+    - Under Differential Pairs Routing - make your rule where the object matches Diff Pair Class then the name of your diff pair class or All Differential Pairs
+
 
 </details>
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