Planner vanity URL

Vanity URLs are an optional feature, and generally not needed.

Should you wish to set a vanity URL you may.
Abuse of vanity URLs will result in moderator action.

To the right of the text input you'll see a coloured status message.
The different status are this:

• Unused
  This planner does not use a vanity URL (Or will not, if you press Save)
• OK
  This means this planner is currently using that vanity URL
• Available
  You could use this text, if you wish
• Unavailable
  Another planner uses this text, or it's forbidden
• Invalid
  The supplied text does not meet the formatting requirements
• Error
  This likely means there's a programming issue preventing normal operations