Add a profile for the Basis Apple II format.

src/formats/_apple2.textpb

@@ -9,6 +9,26 @@ encoder {
 	apple2 {}
 }
 
+option {
+	name: "plain-appledos"
+	comment: "specifies AppleDOS format, but without sector skew"
+	message: "using AppleDOS filesystem but with no sector skew"
+		
+	config {
+		image_reader {
+			filesystem_sector_order: true
+		}
+		
+		image_writer {
+			filesystem_sector_order: true
+		}
+	
+		filesystem {
+			type: APPLEDOS
+		}
+	}
+}
+
 option {
 	name: "appledos"
 	comment: "specifies AppleDOS soft sector skew for filesystem access and images"