Password, Secret Phrase, and Email
Password
In order to ensure that no one else can use your character, you need a password. It should be something that is not easily guessed, but that you will remember. Including uppercase characters and numbers or symbols will increase the likelihood that your password will not be guessed.
If you wanted to set your password as 12Frog%, you would type +set pword=12Frog%
Secret Phrase
Should you ever forget your password, your secret phrase will enable you to retrieve your password from a wizard. It should be something that is not easily guessed, but that you will easily remember.
If you wished to set your secret phrase as My monkey has no pants, you would type +set secret=My monkey has no pants.
Should you ever lose your password, the email address which you provide can be used to send your retrieved password. This is the only use to which this email address will be put; you will receive no unwanted solicitation.
To set your email, type +set email=example@notreal.com