RE: what is a baseline
Hi Steve
Thanks for your question. The baseline captures values for your tasks (Start, Finish, Duration, Work and Cost) so that you can compare your live project position for each of those values with those agreed at the project start.
The baseline can be saved by going to Tools > Tracking > Save baseline and quickly viewed by going to the Tracking Gantt view.
I hope this helps - let us know if you have any further questions.
Kind regards,
Andrew