relative time
The amount of time between events based on the business work hours defined in service
level agreements or default response requirements. Some functions, such as
rel_date_diff(), support relative time values, as do some database fields such
as inc_performance.rel_time. Note that the Relative option available for use in
some filters has a different meaning where a dynamic time period can be defined instead of a time
period using a static date and time. See also absolute time.