For my situation, people will be entering parameters for "stations". There will be about 100 stations. When a user inserts their first station, is it possible to make the values the user entered in the first station be prefilled as defaults into the next station they enter?
For example, here is a station that has finished parameters: https://dl.dropbox.com/u/46698764/finishedStation.png
And here is a station that still has defaults: https://dl.dropbox.com/u/46698764/newStationStillWithPresets.png
(also as attachments since my links weren't working)
How can I make the station that I've finished override the defaults and prefill the parameters for the station I'm about to start working on?
There are several approaches to this, so I'm sure you'll get more than one reply. If you are planning on adding a custom UI, I would do this on your UI code. But if you are planning on using Part Editor as your UI, then you could probably use Dynamic Rule Reactors. Create rules that store the default values or your parameters, naming them with some prefix like default_<parameterName>, and set the parameters to the rule values. When you insert a station, use postModify trigger to write the new default value to the default_* rule.
Hope this helps.