This shows the total number of agents and rules defined in the document. This includes currently disabled agents and rules. An alias of a note with a rule adds to the rule count as the rule is evaluated in the agent context as well as the original.
The agent and rule 'progress bars' show a moving green line. This indicates the where in the agent or rule cycle execution is currently occurring. The horizontal position relates to the $OutlineOrder position of the item in question, as opposed to a proportional place in context of the number of rules or agents. If, for example, all rules are in notes in the middle of the outline order, the rule line will cycle but only through the middle part of the progress bar. The speed of progress indicates how fast or slow the cycle is running. If no defined items are active, the line for that bar will be static - otherwise no movement may imply an agent or rule that has hung.
From v6.4.0, the agent progress bar list the number of agents and in parentheses the number of agents currently active. The latter is useful in fine tuning performance in complex documents.
Each progress bar shows the title ($Name) of the currently executing item to help give an indication as to the scope of execution.
If automatic agent updates have been disabled, the agent bar shows the caption 'manual updates only'.
Simplenote. The control to the right of the caption shows if Simplenote synching is in use and its status.
Edicts. (v6.2.1) To the right of the Simplenote control a label indicates the number of edicts in use. If any edicts are present it shows how recently they were updated.