A trail of quatrefoils

[R. Sale]

Better than breadcrumbs, because they last so much longer, the VMs presents an uncommon use of quatrefoils as markers in a set of circular illustrations from several parts of the book. It also happens that the quatrefoils occur in illustrations known for other reasons, the cosmos, White Aries, and the central Rosette.

As functional markers for specific text segments, there is the option of either 'accidental' or intentional construction. A workable structure has been put in place for the demarcation of hidden text, but has it been used? How to determine the difference between a live line and a dead wire? These text segments need to be investigated singly and collectively to better understand the situation.

[RobGea]

They seem to be just text markers that occur mainly in the 9-10 o'clock position, consisting of  1 or 2 lines or sometimes a more elaborate design ( your quatrefoils ? ).

But who knows? You may discover something. Let us see what you can come up with.

Here is a quick look at folio fRos, better observations and notations are advised.

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Code for roundel position on fRosette foldout  e.g TopLeft (TL), MiddleMiddle (MM), BottomRight (BR),  etc .

TL TM TR
ML MM MR
BL BM BR

position of marker in clock face notation ( where the short hand is on a 12hour clock face )

TL - 10:00
TM -  5:00 
TR - 12:00
ML - 10:00
MM - 12:30
MM -  5:58
MR - 10:00
MR -  7:00
BL -  7:00
BM -  6:30
BR -  5:58

   .

[R. Sale]

All the rosette text circles have markers, but not all markers are of the same pattern. Not all of them are quatrefoils.

Examples from the era of the 'patterned background':
.
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The rectangular quatrefoils are a somewhat floral-looking pattern of an abstract flower with four petals. The VMs only has the actual quatrefoils in specific cases. Perhaps the marked texts are grouped according to the type of pattern used as a marker - the central Rosette and the wheel of the cosmos. The zodiac is a related but separate case. Different parts of a hidden text could be designated by different types of markers and located in different places. 

The markers exist - but is there something hidden in the circular texts and their patterned markers? An adequate system was put in place. If that were done for a reason, wouldn't that imply that the system was used somehow, but how could that be determined?