What is their purpose and how they differ to similar nontotal properties? Manual is not very generous in explanation, more or less, these properties are just listed.
total-burst-limit (integer) - burst limit for global-total queue
total-burst-threshold (integer) - burst threshold for global-total queue
total-burst-time (time) - burst time for global-total queue
total-limit-at (integer) - limit-at for global-total queue (limits cumulative upload + download to total-limit-at bps)
total-max-limit (integer) - max-limit for global-total queue (limits cumulative upload + download to total-max-limit bps)
total-queue (name) - queuing discipline to use for global-total queue