\section{Changelog} Clarifications of specifications (without actual changes of implementations) are numbered with lowercase letters, e.g. {\em V1.00a}, {\em V1.00b} etc. \smallskip Changes which affect the implementation of codecs are indicated by increasing version numbers, e.g. {\em V1.00}, {\em V1.01}. Version numbering is independent for each codec. \subsection{RS03 codec} \begin{tabular}{lp{14cm}} V1.00 & {\em supported since dvdisaster version V0.79.4} \\ & Clarified: RS03 header does not contain copy of first CRC sector (appendix \ref{eh}). \\ & Added $sectorsPerLayer$ field in Ecc header and CRC block format.\\ & Added ecc file specification.\\ \end{tabular} \subsection{RS02 codec} \begin{tabular}{lp{14cm}} V1.01 & {\em supported since dvdisaster version V0.79.5} \\ & Added the {\em sectorsAddedByEcc} field in the {\em EccHeader}. \\ V1.00 & {\em supported since dvdisaster version V0.66} \\ & First draft of specification, open for review for missing parts and errors. \\ \end{tabular} \subsection{RS01 codec} \begin{tabular}{lp{14cm}} V1.00 & {\em supported since dvdisaster version V0.66} \\ & First release of specification. \\ \end{tabular} \newpage