Document the expected XML structure related to the translation and annotation of aligned sentences

[sergeleger]

There is no documentation or specification directing the users on how to manually edit a readalong XML document to create additional versions of an aligned sentence (e.g.: for translation, orthography, transliteral annotation, etc.)

One approach could be in the form an instructional comment in directly in the XML file (possibly with a link to readalong's github pages for more detailed intructions).