This document contains links to resources about converting class libraries from Portable Class Libraries (PCL) to .NET Standard. It includes links to a GitHub repository containing a tool called Mutatio that can automatically upgrade PCL projects, an article explaining how to manually upgrade a PCL project, and links to a Visual Studio extension and its GitHub repository that helps convert PCL to .NET Standard projects. It also mentions that other settings may need to be changed during the conversion process.

5. https://github.com/yuv4ik/Mutatio

6. https://xamarinhelp.com/upgrade-pcl-net-standard-class-library/

8. 他に設定が入る場合もある

9. https://github.com/yuv4ik/Mutatio

10. 作ってみました

12. https://marketplace.visualstudio.com/items?it
emName=tafuji.pcl2netstandard
https://github.com/tafuji/Pcl-To-NetStandard

19. https://docs.microsoft.com/ja-jp/visualstudio/extensibility/creating-an-extension-
with-a-menu-command?view=vs-2017

26. https://github.com/tafuji/Pcl-To-NetStandard
https://marketplace.visualstudio.com/items?itemName=tafuji.pcl2netstandard