FMB help list!

[xpupx]

Need a little help in the following in FMB:
Splined roads, what are they and how do I use them?
Adding Humans on guns, is this done in the config file or on the AI triggers?
I remember reading that there has been some map tools to the briefing page has anybody seen or
used them?
Industrial buildings, when I place them I get an error message something about hooks unbound?
Thanks in advance