OK, so I read the article about Grekobohairic versus true Bohairic, and it said at the end that sometimes true bohairic is mistakenly called Sahidic, which leads me to a question. If a book or article says its teaching Sahidic, then is it usually actually teaching old bohairic? And when something says it teaches Bohairic, does it usually mean old bohairic or greko-bohairic?