Use 'change incognito' to change various incognito settings.

To see your current settings:

> change incog

To change a setting:

> change incog<field>

where <field> can be one of:

host whether your host name will be visiblelevel whether yourlevelandclasswill be visible in yourwhois where whether you will show up on 'where' who whether you will show up in 'who'

Your host will never be shown if you are incognito "who".