/// <summary>
/// Execute a command in the undo sequence. Used for Redo
/// </summary>
/// <param name="slot">Which command</param>
/// <param name="arg1">First argument to be passed</param>
/// <param name="arg2">Second argument to be passed</param>
public void executeCommand(int slot, object arg1, object arg2)
{
Icommand c = (Icommand)commands[slot];
c.execute();
lastExecuted = c;
}
/// <summary>
/// Executes command and adds it to the undo queue.
/// </summary>
/// <param name="c"></param>
public void executeCommand(Icommand c)
{
c.execute();
this.lastExecuted = c;
}