Multilingual PDF

There is an OS X extension lpdf, which is the Multilingual PDF of the title of this blog article. Letʼs look at System Information.app with terminal.

find . -name '*.lpdf'
./Contents/Resources/ProductGuides/productinfo1.lpdf
./Contents/Resources/ProductGuides/productinfo2.lpdf
./Contents/Resources/ProductGuides/productinfo3.lpdf
./Contents/Resources/ProductGuides/regulatory-022-00023.lpdf
./Contents/Resources/ProductGuides/regulatory-022-00272.lpdf
./Contents/Resources/ProductGuides/regulatory-022-00432.lpdf
./Contents/Resources/ProductGuides/regulatory-022-00458.lpdf
./Contents/Resources/ProductGuides/regulatory-022-00459.lpdf
./Contents/Resources/ProductGuides/regulatory-022-00465.lpdf
./Contents/Resources/ProductGuides/regulatory-022-00466.lpdf
./Contents/Resources/ProductGuides/regulatory-022-5167.lpdf
./Contents/Resources/ProductGuides/regulatory-022-6097.lpdf
./Contents/Resources/ProductGuides/regulatory-022-6098.lpdf
./Contents/Resources/ProductGuides/regulatory-022-6346.lpdf
./Contents/Resources/ProductGuides/regulatory-022-6347.lpdf

Looking inside, for example, productinfo1.lpdf/Contents/Resources we can see a set of lproj directories.

ar.lproj      es.lproj      id.lproj      pl.lproj      th.lproj
ca.lproj      es_MX.lproj   it.lproj      pt.lproj      tr.lproj
cs.lproj      fi.lproj      ja.lproj      pt_PT.lproj   uk.lproj
da.lproj      fr.lproj      ko.lproj      ro.lproj      vi.lproj
de.lproj      he.lproj      ms.lproj      ru.lproj      zh_CN.lproj
el.lproj      hr.lproj      nl.lproj      sk.lproj      zh_TW.lproj
en.lproj      hu.lproj      no.lproj      sv.lproj

The above directory names are of the form language tag.lproj. Languages include: ar (arabic), fr (french), ja (japanese), ko (korean), th (thai) and zh_CN (chinese in China). Inside each of the above directories is a language localized productinfo1.pdf e.g. ko.lproj contains a productinfo1.pdf which is the Korean language version of the document.

More concisely: A lpdf is an OS X Package containing a set of language localized PDFs.

Note: This exploration of lpdf was carried out using OS X Yosemite 10.10.4.