8,9d7
< import CH.ifa.draw.framework.DrawingView;
< 
26c24,33
< public interface Command {
---
> public abstract class Command {
> 
>     private String  fName;
> 
>     /**
>      * Constructs a command with the given name.
>      */
>     public Command(String name) {
>         fName = name;
>     }
31c38
<     public void execute();
---
>     public abstract void execute();
36c43,45
<     public boolean isExecutable();
---
>     public boolean isExecutable() {
>         return true;
>     }
41,43c50,52
<     public String name();
<     
<     public DrawingView view();
---
>     public String name() {
>         return fName;
>     }