[scottchu] What is the host name for? can we change 'solr' in request url to some other name?

[scott.chu]

I see there's a -h option for bin\solr start command. What's that for? When we 
crate a core, say 'abc', the request url is something like 
http://..../solr/abc. I'd like to change 'solr' to other name, how can I do it?