Changes on 12-23-15:

• Fixed a bug (I guess?) where multiple types of filth wouldn't show in your description at the same time. Now one type of slime or snowball or whatever won't take precedence over another and cause it to be hidden.
• Stamps can now be used on letters, notes, and packages. Excitement abounds.
• Added a docking bay/landing pad parent for structures designed inside of architectural design simulators. The new parent will show up under the PARENT command, and will not appear for players outside of a simulated environment.
• Fixed a bug in wind instruments that wouldn't allow you to play a specific tune.