Hi Waseem,
yes, just use:
:- use_module(library(dec10_io)).
There are a couple of ways to get information like this directly from the system. You can look in the 'Predicate index' of the Ciao manual in whatever fromat you prefer (html and info are best because they take you directly to the information). Also, if you use emacs, it is even easier. If you have opened a .pl file, then simply do 'C-c TAB' (or select 'Help ...' from the Ciao/Prolog menu) and type 'tell' at the prompt: this will take you directly to the manual page in info.
MH