http://www.fmi.uni-passau.de/archive/doc/unix/unixhelp/Unixhelp/tasks_ftp3.2.1exp.html (Einblicke ins Internet, 10/1995)This is an example of how you are prompted for access authorisation by the hhcp command.
hhcp afile castle:bfile [castle: no stored attributes] transfer authorization:username transfer password: password afile: transfer id is nnnn