During the execution of Nmap, all key presses are captured. This
allows you to interact with the program without aborting and
restarting it. Certain special keys will change options, while
any other keys will print out a status message telling you about
the scan. The convention is that lowercase letters increase the
amount of printing, and uppercase letters decrease the printing.
You may also press '?' for help.
v
/ V
Increase / decrease the verbosity level
d
/ D
Increase / decrease the debugging Level
p
/ P
Turn on / off packet tracing
?
Print a runtime interaction help screen
Anything else
Print out a status message like this:
Stats: 0:00:07 elapsed; 20 hosts completed (1 up), 1 undergoing Service Scan
Service scan Timing: About 33.33% done; ETC: 20:57 (0:00:12 remaining)