\input csfonts  % re-defines primitive \font
\input plain    % format Plain
\restorefont    % original meaning of primitive \font
\input utf8-csf % input: UTF-8, internal TeX: CS-font
\input hyphen.lan  % czech / slovak hyphenation pattern (may be others too)
\input plaina4  % \hsize and \vsize for A4
\everyjob=\expandafter{\the\everyjob
   \message{The format: plain-utf8-cs <Jan. 2003>.}
   \message{The cs-fonts are preloaded and A4 size predefined.}}
\dump