The usage dictionary of an optional content group: what its content is for. A live view; exposed as data.
public sealed class PdfOptionalContentUsage
ISO 32000-2 §8.11.4.4, Table 100. The entries drive automatic state changes only through the auto-state (AS) entries of a
configuration (ApplyAutoStates(PdfOptionalContentState, PdfOptionalContentEvent, PdfOptionalContentUsageContext)); reading them changes nothing.
kind:method, kind:property, kind:ctor. Press Esc to clear.CreatorGets the application that created the group (CreatorInfo Creator), or null.CreatorSubtypeGets the kind of content per the creator (CreatorInfo Subtype, such as Artwork or Technical), or null.DictionaryGets the usage dictionary.ExportStateGets the recommended state when exporting (Export ExportState), or null.LanguageGets the language and locale of the content (Language Lang, such as es-MX), or null.LanguagePreferredGets a value indicating whether the group is preferred on a partial language match (Language Preferred ON). Default false.PageElementGets the kind of pagination artifact (PageElement Subtype: HF, FG, BG or L), or null.PrintStateGets the state when printing (Print PrintState), or null.PrintSubtypeGets the kind of printed content (Print Subtype, such as Trapping or Watermark), or null.UserNamesGets the individuals, titles or organisations the content is for (User Name, a text string or an array).ViewStateGets the state when the document is first opened (View ViewState), or null.ZoomMaxGets the magnification below which the group is ON (Zoom max), or null when absent (infinity).ZoomMinGets the minimum magnification at which the group is ON (Zoom min, default 0), or null without a Zoom entry.