Board Thread:Wiki Discussion/@comment-2020924-20150804041730/@comment-2020924-20151008045708

But since the tones are not important when it comes to lyrics, they are only letter decorations that make it difficult to correct lyrics (I should have mentioned this before but I forgot about this being one of the reasons for this proposal). If 重 has mistakenly turned out as "zhòng" instead of "chóng", or 假 as "jiǎ" instead of "jià" (which probably no-one will notice anyways, especially 假) then besides correcting the consonant/whatever, you also have to copy-and-paste the correct tone (how many people have an ǎ key on their keyboard? it is a letter that is only used in pinyin)