Internet Direct (Indy) Version 9.0.1 Beta
TIdFTP.CanResume
This property indicates if the FTP site supports FTP Resumes.

property CanResume: Boolean;
Description
This property indicates if the FTP site supports FTP Resumes. If the FTP server supports resumes, you can use the TIdFTP.Get method to resume a previously aborted download. If the FTP server does not support resume, the file has to be retrieved completely from the start.