The thing is its a file that I use daily for writing and I often later copy and paste stuff out of it into different files, but this is sort of my working file, it will never be a finished document. So what I need is for the automatic speeling checker (the one that works on the fly) to always be on regardless of the size of the document, OR, at least, if it must get turned off when the file gets too big then at least for it to get turned back on once I reduce the size of the file.