The top section is an extensive manual explaining how to use it in scripts or just in the prompt. There may be bugs, I'm always improving it.

It does have a .Wait() mode with a progress bar, or you can leave it running in the background and call .Progress() to get a simple progress report. As long as it hasn't been closed, finalised, or disposed, you can add new tasks to it. It's primarily intended for many jobs of the same type, but has an .AddTaskOverride() so you can use it as a general processing pool.