[plt-scheme] language levels in PLT

Hi PLT/scheme gurus -

I just discovered the wonderful world of PLT and I have some newbie
questions with regards to PLT - I did search for answers first so hopefully
I didn't miss the obvious ;)

1) What is an appropriate language pack for an experienced programmer?  I've
heard Pretty Big is what most experienced programmers need.  My question is
- is Pretty Big necessary for web programming or would Textual suffice?  It
seems that Pretty Big also includes GUI stuffs which are unneeded for web
programming.

2) What is the language level Swindle?  I did find the swindle site (
http://barzilay.org/Swindle/), but not sure how Swindle differ from Pretty
Big or other levels - is it included in one of the other levels?  Or is this
something orthogonal to the language level?  Curiously this is not mentioned
on the manual even though manual is recent (
http://download.plt-scheme.org/doc/drscheme/drscheme-Z-H-2.html#node_sec_2.6).


3) How can I explicitly add the language features programmatically? i.e.,
can I do something similar to (require (lib "pretty-big")) to add
language/library constructs manually outside of DrScheme?

Any input is greatly appreciated - TIA for your time ;)
yinso

-- 
http://www.yinsochen.com
...continuous learning...
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