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!

リンクされたレイアウトのリファレンスと add_annotation の位置指定に関するドキュメントから始め、複数のテキスト文字列とコンテナ座標のサポートを比較します。完了条件は、両方の要件を満たす既存のワークフローを文書化するか、それらを組み合わせるためのサポートされた方法を定義して実装し、プロジェクトのテストで動作を検証することです。