Represents the "BindingMaterialName" entry of the richmediaparams dictionary object.

It is defined as part of the PDF 1.7 Extension Level 3 specification.

It contains a string representing a PDF string object.

For definitive details see:.

Adobe Supplement to the ISO 32000, BaseVersion: 1.7, ExtensionLevel: 3; Table: 9.51c, page 90.