Dear list, I have often wondered why the size limit so low for comfortably editing files in text mode in scripts such as Tamil? I am currently editing an ancient Portuguese-Tamil dictionary and as soon as the file size reaches a certain size, I can no longer trust the cursor position. To give an example, if I edit today in text mode a file containing the equivalent of one page, which has a size of 23 kB, I can trust the position of the cursor on screen to show me where the next Tamil character will be inserted. HOWEVER, if I edit in text mode a file containing the equivalent of 60 pages (which has a size of 693 kB), I can no longer trust what I see and have to enter the Tamil text without paying attention to the position of the cursor, which is far to the right side of the actual insertion position. Why is that the case? Why is a text editor such as Notepad++ capable of doing what oXygen cannot do, with respect to rendering text containing complex scritps such as Tamil? Am I doing something wrong? I would like to know Thanks for any solution provided -- Jean-Luc Chevillard https://htl.cnrs.fr/equipe/jl-chevillard/ P.S. The problem does not occur in Author mode, but one does not always want to define a .CSS