[Therion] survey-level: Minor correction /clarification of entry in Therion Book

Just looking for a clarification of the following entry copied from pg 51 of the Therion Book. (text copy and image copy) _ survey-level <N/all> . how many surveys to display with stations. There seems to be a formatting issue, but more importantly it's function. I'm being lazy here and have not experimented. I assume it's related to the debug statement used in layouts. Does it control the display of the nested level of survey? Eg 126 versus 126@f.Greenlink.RiwakaSystem If so I assume the default is N for none, based on my experience so far. Is this correct? Bruce