Cisco ASA Series Cli Configuration Manual page 241

Chapter 1 Configuring Multiple Context Mode
Detailed Steps
Command
Step 1
context name
Example:
hostname(config)# context administrator
Step 2
(Optional)
description text
Example:
hostname(config-ctx)# description
Administrator Context
Purpose
Adds or modifies a context. The name is a string up to 32
characters long. This name is case sensitive, so you can have two
contexts named "customerA" and "CustomerA," for example.
You can use letters, digits, or hyphens, but you cannot start or end
the name with a hyphen.
"System" or "Null" (in upper or lower case letters) are reserved
names, and cannot be used.
Adds a description for this context.
Cisco ASA Series CLI Configuration Guide
Configuring Multiple Contexts
1-21