[texhax] Boldface hack request for environment

[Wouter Duivesteijn]

Hello,

I want to write an environment that (among other things) typesets the 
first and only the first paragraph of text in boldface. My first 
attempts were with \AfterBegin from the atbeginend package, however I 
cannot use this since my environment accepts arguments (for the 
aforementioned other things). Could someone give me a better idea?

Thanks,
Wouter