For me, I think the assertions doc contains more or less all that I need to know. Then again I've used assertions in other languages before, so maybe some extra information on the rationale behind assertions and what you would use them for might be useful. I mean something like this friendly introduction by Sun.

Nice one,
Joost.

-- 
#!/usr/bin/perl -w
use strict;$;=
";Jtunsitr pa;ngo;t1h\$e;r. )p.e(r;ls ;h;a;c.k^e;rs 
";$_=$;;do{$..=chop}while(chop);$_=$;;eval$.;
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