Hi, #+begin_src elisp :results output (aaa bbb ( #x09#x09#x09ccc)) ccc #+end_src looks like this in the editor (aaa bbb ( ccc)) ccc Line 1-3 were indented automatically by pressing Tab. In line 4 I inserted 6 spaces manually. This is what I would expect to find in line 3 too. But at my surprise there are 3 tab chars in line 3. Line 2 was indented automatically with 1 space. 1. So why is line 3 indented with 3 tabs instead of 6 spaces? 2. How can I prevent this? 3. Why does a tab have a width between 1 and 2 spaces? 4. How can I prevent this misalignment? org-block face has fixed-pitch. Org mode version 9.4.6 (9.4.6-gcf30f7 (setq-default tab-width 2) (setq org-src-fontify-natively t org-src-window-setup 'current-window org-src-strip-leading-and-trailing-blank-lines t org-src-preserve-indentation t org-src-tab-acts-natively t) Thanks, Michael