D-Link DES-3250TG Reference Manual page 20

DES-3250TG Layer 2 Fast Ethernet Switch User's Guide
Figure 2-3. Example Command Parameter Help
In this case, the command config account was entered with the
parameter <username>. The CLI will then prompt you to enter
the <username> with the message, Next possible
completions:. Every command in the CLI has this feature, and
complex commands have several layers of parameter prompting.
To re-enter the previous command at the command prompt,
press the up arrow cursor key. The previous command will
appear at the command prompt.
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