The status parameter is the only required value - use it to select the rationale for your wikibreak. Leaving it blank results in the template not appearing, and providing an invalid status will produce a default message.
Status Parameter
Use it for
0, no, none, nyet, normal
(template doesn't appear)
1, short
Short wikibreak
2, long
Long wikibreak
3, busy, rl, nebula
Busy in real life
4, vacay, partay
On vacation
5, family, fam, baby
With family
6, other
(Whatever you want it to be)
The other parameters modify the messages produced. For example, including a vacay value will say where you are on vacation, whereas specifying why will explain why you are busy. Entering a date will produce a return time, and need not be numerical. The user option allows you to supply a displayed name or style other than just your username.
All images are set to 75x50. If you wish to use one of the specified images but not the one associated with your selected status, indicate which using the pic parameter. The other and otherimage values let you specify your own text and image, respectively, but are only valid when used in conjunction with the sixth/other status. Combining pic = other with otherimage, however, allows you to select an external picture while using the text specified by your status.