control

When control is on, control characters will be displayed with the ^ (or current meta) symbol. For example, a carriage return + linefeed line ending would look like this: ^M^J (control-M is another name for carriage return, and control-J is a linefeed).

Characters with the high bit turned on (as happens when the remote system is using parity) will be preceded with the % symbol. So, for instance, the uppercase letter K with the high bit on would look like this: %K.

The control option is useful for diagnostic work, when you're trying to figure out exactly what the remote computer is sending to you.

The control option will not prevent unprintable characters from being written into your get file, if one is open. Instead, use the guard option to throw away unprintable characters without writing them to your get file.