How can I peer into a dynamic library to view the headers/contents?

FROM : Frederick C. Lee
DATE : Mon Apr 11 20:56:57 2005

Greetings:
    I'm a neophyte trying to working with dynamic libraries imported
into my XCode project.  Specifically, I'm trying to import
libshp.dylib that I had imported via DarwinPorts:

[/Users/Ric]ls /opt/local/lib/*shp*
/opt/local/lib/libshp.1.2.10.dylib      /opt/local/lib/libshp.1.dylib@ 
        /opt/local/lib/libshp.dylib@

1) I like to peer inside of a dylib to see what APIs are available and
hence how to incorporate it into my Obj-C Code (what do I #import ?)
2) How I can link the particular dylib into my project:
    Do I merely set the LIBRARY_SEARCH_PATHS = /opt/local/lib  {via
Build/Link option}?

I'm stuck here.

I have it set via the LIBRARY_SEARCH_PATHS and it compiles; but I don't
know what to use in the #import stmt nor how to peek inside the dylib
to see what's there to import.

Regards,
Ric.