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3.2.15. Relationship Type

Parameter Name

RELTYPE

Purpose

To specify the type of hierarchical relationship associated with the calendar component specified by the property.

Format Definition

This property parameter is defined by the following notation:

 reltypeparam       = "RELTYPE" "="
                     ("PARENT"    ; Parent relationship - Default
                    / "CHILD"     ; Child relationship
                    / "SIBLING"   ; Sibling relationship
                    / iana-token  ; Some other IANA-registered
                                  ; iCalendar relationship type
                    / x-name)     ; A non-standard, experimental
                                  ; relationship type

Description

This parameter can be specified on a property that references another related calendar. The parameter specifies the hierarchical relationship type of the calendar component referenced by the property. The parameter value can be PARENT, to indicate that the referenced calendar component is a superior of calendar component; CHILD to indicate that the referenced calendar component is a subordinate of the calendar component; or SIBLING to indicate that the referenced calendar component is a peer of the calendar component. If this parameter is not specified on an allowable property, the default relationship type is PARENT. Applications MUST treat x-name and iana-token values they don't recognize the same way as they would the PARENT value.

Example

 RELATED-TO;RELTYPE=SIBLING:19960401-080045-4000F192713@
  example.com

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