resultat nr två på en sökning på google... :l
rshweb.com/text/support/vservers/faq/ftp.html
A: FTP Transfer Modes: Before you transfer any information to your server, you should understand the FTP really has two transfer modes: ASCII and Binary. ASCII mode is for transferring text files to your Virtual Server, such as Web pages, or CGI and Perl scripts. Binary mode is for transferring binary files, such as graphics, executable programs, or zip files. Most good FTP clients can tell what type of file you're trying to transfer and switch modes automatically, but if yours does not, or if it's not set up to do so, be sure you're aware of these two modes in case you experience problems accessing information you transferred to or from your Virtual Server.