Currently, manual folds are only used if - the buffer was opened with `&l:foldmethod` and `&g:foldmethod` set to to `manual`, and - at no point the user switched to foldmethod other than `manual` and saved the buffer or hit `zuz` afterwards.
Currently, manual folds are only used if
&l:foldmethodand&g:foldmethodset to tomanual, andmanualand saved the buffer or hitzuzafterwards.