Time and again I am in the need of figuring out the arguments/options of a package, and more often than not I get very frustrated with the results I get online. Even worse, sometimes I get confused because a command actually belongs to a package with a completely different name. Since I'm noticing this is a recurrent problem (which honestly I just have with LaTeX), I'd like to instead see the actual code in my installation and try to figure it out myself.
For instance, I am currently trying to figure out the options that
\subfloat accepts, but googling
\subfloat documentation lead me to some pdfs that are actually of little help. So I'd like to instead look at the source code of
\subfloat. How can I do that? I am using Miktex and WinEdt.