Please add a way to specify the location of multiple bits of text using container coordinates

I have an application where I need to put one text string (the Y-axis label) in the top left corner and a second text string containing source information in the bottom left corner. Placing text at the left edge of the graph seems to require specifying container X-coordinate 0. Title obviously supports creating one such label in container coordinates, but only appears to support one piece of text. https://plotly.com/python/reference/layout/ add_annotation supports multiple pieces of text, but does not appear to support container coordinates. https://plotly.com/python/text-and-annotations/#positioning-text-annotations-absolutely

Please offer one tool that supports both multiple strings and container coordinates if it is not already possible to do so. If it is possible, please clarify the documentation. If this is a good Plotly codebase contribution 0 for a data scientist, let me know -- I can attempt it.

Thanks!

Inizia con il riferimento al layout collegato e la documentazione sul posizionamento di add_annotation, confrontando il supporto per più stringhe di testo e per le coordinate del contenitore. Il lavoro è completato quando viene documentato un workflow esistente che soddisfa entrambi i requisiti oppure quando viene definito e implementato un modo supportato per combinarli, con il comportamento verificato dai test del progetto.