Docs on command line switches?

Are there any docs on the command line switches for WinSCP? I know I can do WinSCP3 sessionname /upload file|directory ... But, are there other options/switches available from the command line? When I use the /upload switch it ALWAYS asks me for the name of the directory on the server into which the file(s) should be stored. Is there any way around this? Can I specify that on the command line as well?

Who

WinSCP has almost no command line options. /upload is there only to implement "Send to" context menu in explorer. Use some command-line SCP/SFTP client, like PSCP or PSFTP.