The logic in the installation wiki page at https://wiki.koha-community.org/wiki/Koha_on_Debian is not strictly linear; it embodies conditional logic. That it says, "If you want ABC, do such-and-such, otherwise do such-and-such". This seems to call for indentation as used in Python and (with braces) other computer languages. That is, I suggest that the wiki should follow something like the following format: [Instructions which you should do first in and in the specified order for any installation] If you want to install by 'stable', 'oldstable', or 'oldoldstable' nomenclature: [Indented instructions to install accordingly] Otherwise, you can install by release number: [Indented instructions to install by release number]. In any case, when you have finished, you will want to continue with: [Instructions to continue after the indented instruction options have been addressed.] This can be done more than once, and it can be nested more than one deep if your logic includes a choice within a choice. HTH, Br. C.S. Hayward, author and apologist, and more importantly novice at St. Demetrios Orthodox Monastery