I have seen "32.4 Externalizing Graphics" in the Tikz manual, which explains how Tikz images can easily be exported as PDF images using pdfLaTeX.
However, I am persuaded I saw somewhere a way to export a Tikz picture to 'raw' (primitive?) Latex code in
picture environment syntax (i.e. using
\line, etc.) - but I may have mixed this up with
dpic/M4 Circuit macros :)
In any case - if
tikz images get 'compiled' to (La)Tex code as an intermediate step - is it somehow possible to export/externalize/convert Tikz picture code to (plain?) LaTeX code?