Turn the fold option on or off with the command:
While fold is on, you don't need to worry about making the strings in your if or until commands match the case or parity of the characters the remote system displays. You should also use fold if the remote system uses parity, otherwise your if and until strings must contain characters with the high bits set exactly as the remote system sends them.
fold does not alter characters
that are displayed on your screen, captured in a get
file, or sent during a file transfer. Use the strip
command if you would like to remove the eighth bit (parity) from characters
stored in a get file.