HP J3100B Installation And Configuration Manual page 147

(the default) allows a new file to be created, but
0
does not allow an existing file to be overwritten.
creates a new file or overwrites an existing file.
1
[dos/unix] is one of the following optional values:
(the default) specifies the DOS file format.
0
specifies the Unix file format.
1
If the PC or workstation does not respond to a ZPut or ZGet command
within approximately 70 seconds, the command times out and control
returns to the Advanced Command line.
File Transfers
Transferring Switch 2000 Configurations
8-11