Added more example files to showcase dependency tracking.

src/_settings.scad

@@ -0,0 +1,2 @@
+plate_height = 2;
+struts_height = 1;

src/example.scad

@@ -1,17 +0,0 @@
-module extrude_layer(layer, height) {
-	linear_extrude(height = height)
-		import("example.dxf", layer = layer);
-}
-
-render(convexity = 10) {
-	union() {
-		difference() {
-			extrude_layer("base", 2);
-			
-			translate([0, 0, -1e6])
-				extrude_layer("text", 2e6);
-		}
-		
-		extrude_layer("struts", 1);
-	}
-}

src/example_1.scad

@@ -0,0 +1,6 @@
+include <_settings.scad>
+
+render(convexity = 10) {
+	linear_extrude(plate_height)
+		import("example.dxf", layer = "text");
+}

src/example_2.scad

@@ -0,0 +1,14 @@
+include <_settings.scad>
+
+render(convexity = 10) {
+	union() {
+		linear_extrude(plate_height)
+			difference() {
+				import("example.dxf", layer = "base");
+				import("example.dxf", layer = "text");
+			}
+		
+		linear_extrude(struts_height)
+			import("example.dxf", layer = "struts");
+	}
+}