In sftp://user:pass@something@ipaddress:port what is something?

Question

I am reading some batch script files trying to work out where a certain file is being uploaded to (and from) and the initial open command looks like (changed of course):

open sftp://user:pass@something@99.999.999.999:22 

but I cannot workout what the something is between password and IP address.

I looked through the documentation at WinSCP but I couldn't find anything that pointed to the answer.

Answer 1

open sftp://user:pass@something@99.999.999.999:22 

username: user
Password: pass@something
sftp address: 99.999.999.999:22