Upgrading section for Manual Installation users

i'm rather old school and like doing everything manually because i like to relate what goes where and what does what.

I have recently seen the benefits of using composer recently although i'm not 100% about the way it works with CI4.

There is an element of duplication or sort of " Spiegel im Spiegel " which is justified by if i remember "thats in case you need to compare.. files changed against unchanged.." well if i need to have a second copy i could just git clone and keep the cloned copy to refer to ?

Another approach is simply to have a section off topic maybe about composer and benefits when you need to update things eg Bootstrap and CI4