The runtime support for Bidirectional help documents (both .inf and .hlp files) is active only for documents that were compiled with IPFCBIDI using /L=ARA or /L=HEB. Such documents will be referred to as "Bidi documents."
Documents compiled with the non-bidi ipfc compiler and documents compiled with IPFCBIDI and any non-bidi language will not be affected by the Bidi runtime support.