I think someting is still missing.
Your steps are for creating the HTML from scratch… I know how to do it, however, I need the current quotation format as the starting point in HTML format.
It is obvious I can just add several HTML tags or Jinja instructions in order to create the format, but I need to get the current quotation format in order to just modified.
Currently, if I have a quotation and then print it, ERPNext shows me the quotation. I need that HTML/Jinja instructions so that I can only modify a few elements, for example, typography.
Furthermore, without choosing custom HTML format I am able to edit the format using this page:
That is not what I am looking for… for example, no Bootstrap CSS is taken into account when modifying the header. On the other hand, I want just to add the company logo in the header… with that page, I don’t have a way to add it.
I hope this is finally clear now.