I have not seen it documented anywhere. Where do you see these tokens?
These calculations are used in the system for utlization calculations:
Billable utilization = Chargeable actual hours / Resource capacity
Non-billable utilization= Actual time with billing type id = Non-chargeable, Complementary or Not available) / Resource capacity
Internal = Actual time with no sales contract / Resource capacity
Resource capacity = Resource work hours – out of office – Non-working days
Green: billable utilization >= resource target utilization
Yellow: target utilization – 20 <= billable utilization < target utilization
Red: billable utilization < target utilization – 20
The resource utilization view is based on the Schedule Board, so you can use the filtering capabilities of Schedule Board to filter your results.