Icarus Class: OptVal
The values for options that may be sent to an application.
name Attribute may stay unnamed in attribute list. 
  Identifier of the option.
prompt  
  Display name of the option.
valInt  
  Integer value of the option.
valReal  
  Real value of the option.
valStr  
  String value of the option.
on  Attribute has a default value. no
  Use one of the following values. y n yes no
visible  Attribute has a default value. yes
  Use one of the following values. y n yes no
restrictType  Attribute has a default value. unRestricted
  Use one of the following values. unRestricted restricted
  The restriction type of this optval.
restrictName  
restrictTo Attribute is multivalued (list). User  
  Restrict access to the users listed.