sorting ascending descending?

HI!
By xx[order(xx)] I can sort the array ascendin. How to sort them
descending.

eg.:

a<-c(2,3,110,23,4)
a[order(a)]

[1]   2   3   4  23 110

but i wont.
[1] 110  23   4   3   2

???
THX in advance
Eryk

--
Witold Eryk Wolski
Max Plank Institut fuer Molekulare Genetik
Ihnestr73 14195 Berlin
Germany
tel.:
Work 0049-30-84131426
http://www.molgen.mpg.de/~wolski


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