For many of the prompts in the system configuration dialog, default answers appear in square brackets ([]) following the question.

You press UReturnu to accept the defaults.

If the system was previously configured, the defaults that appear are the currently configured values.

If you are configuring the system for the first time, the factory defaults are provided, and if there is no factory default, nothing is displayed after the question mark (?).
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The configuration modes you can access from Global Configuration mode include:

   interface configuration

   subinterface configuration

   controller configuration

   map-list configuration

   router configuration

   line configuration

   IPX-router configuration

   Route-map configuration

   ROM monitor
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If you attempt to copy a file into flash memory that is 
already there, a prompt tells you that a file with the 
same name already exists.

This old file is marked deleted when you copy the new file 
into flash. The first copy of the file still remains in 
flash but it is rendered unusable in favor of the newest 
version. It is listed with a [deleted] tag when you use 
the show flash command.

If you abort the copy process, the newer file is marked 
[deleted] because the entire file was not copied and is 
therefore not valid.
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