Used to declare variables and provide them with defaults if they are
not found.
CFPARAM
Attribute
Description
NAME
The name of the parameter you are declaring (e.g.,
"Client.Email" or "Cookie.BackgroundColor")
DEFAULT
Default value to set the parameter to if it does
not exist. The DEFAULT attribute is optional. If it is unspecified an error
will occur if the parameter declared in NAME does not exist.