Creating scene objects from code

Hi, i’m new to unity and I’m creating a 2D side scroller. Is there a way to create the create the objects in the scene (platform, powerups, etc) via code in unity editor? I mean, I’d like to create the objects using a code, but the new objects should be visible directly in the editor so I can move things manually later, I don’t want the objects to be created when I run the game. Is there a way to do this (also if it envolves using external programs)?

p.s. I’m not using Unity Pro

http://docs.unity3d.com/Documentation/Manual/UserGuide.html

Yes you can extend the editor in a variety of ways:

http://docs.unity3d.com/Documentation/Components/ExtendingTheEditor.html

See the ‘Editor Window’ link is probably what you are looking for:

You can also take a look at the editor scripts in the Unity Wiki to see how others have coded their extensions:

http://wiki.unity3d.com/index.php/Scripts/Editor