TeX: Bold selection instead kinovar for black/white printing

[EliseyP]

For BW printing we can select f.e. fist letter in word with bold.
Although PonomarUnicode font haven't bold typeface, there is FakeBold options (OpenOffice use it, i think).
We can create own fake-bold font and redefine some TeX macroses.
For example, global redefining \cu@kinovar (in my style-file i have own option "black", one can add option "fakebold" etc.):

\documentclass{article}
\usepackage{polyglossia}
\usepackage{fontspec}
\usepackage{xcolor}
\setmainlanguage{churchslavonic} % объявляем основным языком документа церковно-славянский
\usepackage{churchslavonic}
\newfontfamily\churchslavonicfont[Script=Cyrillic,Ligatures=TeX,HyphenChar=_]{PonomarUnicode.otf}
\newfontfamily\PonomarBold[Script=Cyrillic,Ligatures=TeX,HyphenChar="005F,FakeBold=2]{PonomarUnicode.otf}
\makeatletter
\renewcommand{\cu@kinovar}[1]{%
  {\PonomarBold% Fake Bold
  #1}}%
\makeatother
\begin{document}
Ра́дꙋйсѧ

\cuKinovar Ра́дꙋйсѧ

\end{document}    

[typiconman]

This needs to be added to the documentation.

[typiconman]

@pgmmpk Please comment on this.