catchfilebetweentags If you know the package catchfile, upon which catchfilebetweentags is written, you've understood yet the purpose of this package. The macro \catchfilebetweentags acts like \catchfile but extract a portion of the file instead of the complete file. The extracted portion can be delimited by strings or by docstrip tags : %<*tag> .... .... % Comments inside the portion can be ignored or catched. ExecuteMetaData is a shortcut to execute immediately the extracted portion. (c) lppl 2010 (FC)