Password-protected files (encrypted packages, encrypted .ppt) are
detected and refused, not decrypted.
Legacy .ppt decks: text, titles, notes, hidden flags, slide size and
pictures are read, and the file is read whole into memory; tables,
charts, comments and document properties of the binary format are not
read, and the verifier does not cover it. PowerPoint 95 files are
refused.
Charts give their cached title, series, categories and values; nothing
is recomputed from the embedded workbook. Extended charts (cx:) inside
mc:AlternateContent fall back to their picture, since the reader does
not claim to understand their versioned namespaces. Embedded objects are listed
with their bytes, not interpreted.
Text formatting beyond bold, italic, underline, strike, size, language,
typeface and hyperlinks is not modelled.
Placeholder inheritance of formatting from layouts and masters is not
resolved; text is never inherited by design.
No rendering of slides to images.
The verifier does not validate against the XSD schemas.
The writer embeds PNG, JPEG, GIF, BMP and TIFF pictures only, creates no
charts or diagrams, and does not edit existing decks.