Allow program module body

Rakefile

@@ -36,22 +36,22 @@ end
 
 desc 'Convert previous stage language into the current stage language'
 task :convert do
-  File.open('boot/stage20/cl.elna', 'w') do |current_stage|
-    File.readlines('boot/stage19/cl.elna').each do |line|
+  File.open('boot/stage21/cl.elna', 'w') do |current_stage|
+    File.readlines('boot/stage20/cl.elna').each do |line|
       current_stage << line
     end
-    current_stage << <<~FUN
-
-      proc f(m: ElnaInstructionModule);
-      begin
-      end;
-
-      proc g();
-      var
-      	x: ElnaInstructionModule;
-      begin
-      	f(x)
-      end;
-    FUN
+#    current_stage << <<~FUN
+#
+#      proc f(m: ElnaInstructionModule);
+#      begin
+#      end;
+#
+#      proc g();
+#      var
+#      	x: ElnaInstructionModule;
+#      begin
+#      	f(x)
+#      end;
+#    FUN
   end
 end