The IfcTextDecoration describes decorations that are added to the text of an element. Values are:

NOTE  Type adopted from text-decoration defined in CSS-1.
HISTORY  New type in IFC2x3.

XSD Specification:

 <xs:simpleType name="IfcTextDecoration">
  <xs:restriction base="xs:normalizedString"/>
 <xs:element name="IfcTextDecoration-wrapper" nillable="true">
    <xs:extension base="ifc:IfcTextDecoration">
     <xs:attributeGroup ref="ifc:instanceAttributes"/>

EXPRESS Specification:

TYPE IfcTextDecoration = STRING;
WR1 : SELF IN ['none', 'underline', 'overline', 'line-through', 'blink']

Link to EXPRESS-G diagram EXPRESS-G diagram

Formal Propositions:

WR1 : Allowable values for text decoration.

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