svn URL semantics help

The usage of URL appears to be confusing to me with SVN clients. Please
let me know if I missed something here -

I am trying to understand the svn commands that take URL as a parameter
for instance svn copy command. So if I try:

$ svn copy https://dodo/trunk http://mipo/tags/t1
subversion/libsvn_client/copy.c:357: (apr_err=200007)
svn: Source and dest appear not to be in the same repository (src: 'https://dodo/trunk'; dst: 'http://mipo/tags/t1')

Basically I can't copy across repository. I can only copy relative to
my current svn repos. If that is the case what's the point of
having a URL in the destination of commands like copy/mkdir/move ?

Did I miss something or SVN semantics with dest URL are confusing ? If I can copy
only relative to the current repos, won't it be more intutive to have a relative
path option with appropriate flags to indicate that a server-side operation needs
to be triggered as opposed to using an open-ended URL semantics ?

-- 
_______________________________________________
Search for businesses by name, location, or phone number.  -Lycos Yellow Pages
http://r.lycos.com/r/yp_emailfooter/http://yellowpages.lycos.com/default.asp?SRC=lycos10
---------------------------------------------------------------------
To unsubscribe, e-mail: users-unsubscribe@subversion.tigris.org
For additional commands, e-mail: users-help@subversion.tigris.org