Usage of Hebrew with the old LaTeX

To work in old LaTeX (laex 2.09) in Hebrew, the following files are used:

    hebrew.sty           hebcal.sty          for Old Code
or
    hebrew_newcode.sty   hebcal_newcode.sty  for New Code and Ms Windows Hebrew
or
    hebrew_p.sty   hebcal_p.sty              for DOS

Hebrew is an option in the old latex ; you specify, for example,
\documentstyle[hebrew,......]{article}   %  In Old Code
\sethebrew
\begin{document}

or
\documentstyle[hebrew_newcode,......]{article}   %  In New Code
\sethebrew
\begin{document}

or
\documentstyle[hebrew_p,......]{article}   %  In DOS 
\sethebrew
\begin{document}