/usr/include/podofo/doc/ is in libpodofo-dev 0.9.3-4.
This file is owned by root:root, with mode 0o755.
..
/usr/include/podofo/doc/PdfAcroForm.h
/usr/include/podofo/doc/PdfAction.h
/usr/include/podofo/doc/PdfAnnotation.h
/usr/include/podofo/doc/PdfCMapEncoding.h
/usr/include/podofo/doc/PdfContents.h
/usr/include/podofo/doc/PdfDestination.h
/usr/include/podofo/doc/PdfDifferenceEncoding.h
/usr/include/podofo/doc/PdfDocument.h
/usr/include/podofo/doc/PdfElement.h
/usr/include/podofo/doc/PdfEncodingObjectFactory.h
/usr/include/podofo/doc/PdfExtGState.h
/usr/include/podofo/doc/PdfField.h
/usr/include/podofo/doc/PdfFileSpec.h
/usr/include/podofo/doc/PdfFont.h
/usr/include/podofo/doc/PdfFontCID.h
/usr/include/podofo/doc/PdfFontCache.h
/usr/include/podofo/doc/PdfFontConfigWrapper.h
/usr/include/podofo/doc/PdfFontFactory.h
/usr/include/podofo/doc/PdfFontFactoryBase14Data.h
/usr/include/podofo/doc/PdfFontMetrics.h
/usr/include/podofo/doc/PdfFontMetricsBase14.h
/usr/include/podofo/doc/PdfFontMetricsFreetype.h
/usr/include/podofo/doc/PdfFontMetricsObject.h
/usr/include/podofo/doc/PdfFontSimple.h
/usr/include/podofo/doc/PdfFontTTFSubset.h
/usr/include/podofo/doc/PdfFontTrueType.h
/usr/include/podofo/doc/PdfFontType1.h
/usr/include/podofo/doc/PdfFontType1Base14.h
/usr/include/podofo/doc/PdfFontType3.h
/usr/include/podofo/doc/PdfFunction.h
/usr/include/podofo/doc/PdfHintStream.h
/usr/include/podofo/doc/PdfIdentityEncoding.h
/usr/include/podofo/doc/PdfImage.h
/usr/include/podofo/doc/PdfInfo.h
/usr/include/podofo/doc/PdfMemDocument.h
/usr/include/podofo/doc/PdfNamesTree.h
/usr/include/podofo/doc/PdfOutlines.h
/usr/include/podofo/doc/PdfPage.h
/usr/include/podofo/doc/PdfPagesTree.h
/usr/include/podofo/doc/PdfPagesTreeCache.h
/usr/include/podofo/doc/PdfPainter.h
/usr/include/podofo/doc/PdfPainterMM.h
/usr/include/podofo/doc/PdfShadingPattern.h
/usr/include/podofo/doc/PdfSigIncMemDocument.h
/usr/include/podofo/doc/PdfSigIncPainter.h
/usr/include/podofo/doc/PdfSigIncSignatureField.h
/usr/include/podofo/doc/PdfSignOutputDevice.h
/usr/include/podofo/doc/PdfSignatureField.h
/usr/include/podofo/doc/PdfStreamedDocument.h
/usr/include/podofo/doc/PdfTable.h
/usr/include/podofo/doc/PdfTilingPattern.h
/usr/include/podofo/doc/PdfXObject.h