The package deals with sending stuff to the screen for users to debug.

The operations included here:

• on Activate trace invokations globally.

• off Deactivate trace invokations globally.

• do Send a message to the screen depending on global settings.

• yes Send a message to the screen no matter the global settings.

• no Don't send a message to the screen no matter the global settings.

• boot Activate the package. This is done at package require time.