If false, subsetting is not enabled. Font subsetting embeds only those glyphs that are used in a document, instead of the entire font. This reduces the size of a PDF file that contains embedded fonts. If font subsetting is enabled, the application determines whether to embed the entire font or a subset by the number of glyphs in the font that are used (including component glyphs referenced by seac glyphs), and the value of MaxSubsetPct.