Buildings are only very basic right now and will be fleshed out later on. As for customization, yes, that is planned. Try looking at the actual *.pl files themselves to see how i am laying the groundwork for that. Look at ALL of them too.
As for help, right now the following is the most important one.
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I'm slowly starting to work on Lifevis again. However, before getting to the meat on that, I need the offsets of the latest version. Why do i need them? Quite simply: If the offsets cannot be determined for all versions, then there is no point in going on, as there could be a wall beyond which they cannot be determined anymore.
Furthermore, I cannot rely on non-public methods of locating these. To do so would be to rely on the niceness of strangers, which can, due to Toady's varying release schedules, be quite fleeting. Additionally, so far it seems that there are quite a few people who work on finding the offsets, but everyone uses their own methods with only low amount of discussion between these people. (At least as far as public discussion goes. I know there were some private discussions, but to the DF community these are useless.)
As such, I have started with my knowledge and experience in DF so far, to look for and determine the offsets of 40d9 and at the same time document the steps taken to get them, both for myself and for others.
The progress so far is documented here:
http://www.dwarffortresswiki.net/index.php/Offset_Finding_MethodsFor anyone interested, i encourage you to follow my steps, retrace them, look for patterns that i missed, or try going down other paths that i ignored. I intend for this document to be written in such a manner that the average person capable of working their way through the DF interface should be able to follow these steps on their own.