Wait a minute, what is a MARKBOOK?

What does a markbook do? What is it for? Who uses it? Who makes it? How does it work?

In Mariel's dictionary this is a markbook;

...A Markbook is a software tool that is used for managing systematic rosters purposed for school and employment participants. 

The possible participants could be teachers, students, employers and employees, and more others for different industries.

Still not sure what it is?...

...Well so am I :[

But here are some more information that i feel that i think that i know it's right and reliable :D

• it uses macros
• it would be very useful if it can be shared with other colleagues and/or participants
• it may be configured to suit applications and software
• some uses multiple applications (?)
• it may be upgraded

Further research is needed