Advanced panel
The Advanced panel contains options for subsetting fonts, omitting graphics for OPI replacement, selecting a transparency flattener preset, and adding Job Definition Format (JDF) support.
The Advanced panel provides control over workflows requiring OPI or flattening of transparency.
Fonts area
InDesign embeds a font unless the font vendor has restricted embedding. Embedding prevents font substitution when a reader edits the file and ensures that readers will see the text in its original font.
If InDesign cannot embed a font due to the font vendor’s settings and someone who opens or prints an Adobe PDF file does not have access to the original font, InDesign temporarily substitutes the font with a Multiple Master typeface: either AdobeSerMM for a missing serif font or
AdobeSanMM for a missing sans serif font. Multiple Master fonts can simulate the font metrics and line breaks of the original font so that the overall layout is preserved.
Subset fonts when percent of characters used is less than: Embeds only the glyphs actually typed in the document, based on a threshold percentage. The threshold determines the point at which InDesign embeds all characters for a font. For example, if you change the threshold to 35,
InDesign embeds all characters only if more than 35% of the font’s characters are used in the file; if fewer than 35% of the characters are used, InDesign embeds only the characters used.
For high-resolution output, it’s a good idea to subset fonts to ensure that the glyphs used by the document are the ones that will be used by the output device. If font subsetting is not used, output may not be as expected if some glyphs at the output device have subtle differences compared to the glyphs in the font versions used in the document. For this reason, the PDF export preset Press is set to subset all fonts below 100% glyph usage by default.
OPI area
The OPI options in the Export PDF dialog box are identical to those in the Print dialog box, except that there is no OPI Image Replacement option in the Export PDF dialog box. See “OPI area” on page 95.
Adobe InDesign CS2 Printing Guide for Prepress Service Providers
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