diff --git a/Triangle.Compiler/src/main/java/triangle/StdEnvironment.java b/Triangle.Compiler/src/main/java/triangle/StdEnvironment.java
index 90507d0..cc8742e 100644
--- a/Triangle.Compiler/src/main/java/triangle/StdEnvironment.java
+++ b/Triangle.Compiler/src/main/java/triangle/StdEnvironment.java
@@ -42,5 +42,8 @@ public final class StdEnvironment {
 	public static ProcDeclaration getDecl, putDecl, getintDecl, putintDecl, geteolDecl, puteolDecl;
 
 	public static FuncDeclaration chrDecl, ordDecl, eolDecl, eofDecl;
+	
+	//keep the bar separate for practical 3 (week 3) work!
+	public static UnaryOperatorDeclaration barDecl;
 
 }
diff --git a/Triangle.Compiler/src/main/java/triangle/contextualAnalyzer/Checker.java b/Triangle.Compiler/src/main/java/triangle/contextualAnalyzer/Checker.java
index 8b05b53..18e3c63 100644
--- a/Triangle.Compiler/src/main/java/triangle/contextualAnalyzer/Checker.java
+++ b/Triangle.Compiler/src/main/java/triangle/contextualAnalyzer/Checker.java
@@ -953,7 +953,11 @@ public final class Checker implements ActualParameterVisitor<FormalParameter, Vo
 				StdEnvironment.booleanType);
 		StdEnvironment.notlessDecl = declareStdBinaryOp(">=", StdEnvironment.integerType, StdEnvironment.integerType,
 				StdEnvironment.booleanType);
+		
+		//add the new bar operator!
+		StdEnvironment.barDecl = declareStdUnaryOp("|", StdEnvironment.integerType, StdEnvironment.integerType);
 
+		
 		StdEnvironment.charDecl = declareStdType("Char", StdEnvironment.charType);
 		StdEnvironment.chrDecl = declareStdFunc("chr",
 				new SingleFormalParameterSequence(
diff --git a/Triangle.Compiler/src/main/java/triangle/syntacticAnalyzer/Parser.java b/Triangle.Compiler/src/main/java/triangle/syntacticAnalyzer/Parser.java
index 4892dcb..7b57985 100644
--- a/Triangle.Compiler/src/main/java/triangle/syntacticAnalyzer/Parser.java
+++ b/Triangle.Compiler/src/main/java/triangle/syntacticAnalyzer/Parser.java
@@ -929,3 +929,4 @@ public class Parser {
 		return fieldAST;
 	}
 }
+
diff --git a/Triangle.Compiler/src/main/java/triangle/treeDrawer/LayoutVisitor.java b/Triangle.Compiler/src/main/java/triangle/treeDrawer/LayoutVisitor.java
index d521635..59b1f38 100644
--- a/Triangle.Compiler/src/main/java/triangle/treeDrawer/LayoutVisitor.java
+++ b/Triangle.Compiler/src/main/java/triangle/treeDrawer/LayoutVisitor.java
@@ -162,7 +162,10 @@ public class LayoutVisitor implements ActualParameterVisitor<Void, DrawingTree>,
 	
 	@Override
 	public DrawingTree visitRepeatCommand(RepeatCommand ast, Void obj) {
-		return null;
+		//very similar to the while cmd, just reverse!
+		var d1 = ast.C.visit(this);
+		var d2 = ast.E.visit(this);
+		return layoutBinary("Repeat.Com.", d1, d2);
 	}
 
 	// Expressions
diff --git a/build/libs/Triangle-Tools.jar b/build/libs/Triangle-Tools.jar
index 4c3d7f4..788193a 100644
Binary files a/build/libs/Triangle-Tools.jar and b/build/libs/Triangle-Tools.jar differ