To begin at the beginning. Secret writing was in use thousands of years ago, early example s
1. Micro writing was in use in WW2 and well before then. I think it was a Franz Schmitz, a WW2 Abwehr agent who was interviewed in 1948 and he spoke of using it and demonstrated it to the reporter concerned. The CIA and it's forebears released a manual relatively recently which spoke of the use of micro writing and how it could be applied to orange coloured stamps and viewed only through a rose tinted lens. (I can hear you thinking )
2. Well before this time micro writing was in use for hundreds if not thousands of years by various religions, the Hebrew religion for example made an art of it, Micrography.
3. Whilst we are talking specifically about micro writing, invisible ink was also in use at the relative time and it would be quite possible if not very likely for a combination of the two to be used.
4. Detection methods vary from viewing it with the naked eye though more likely with a magnfying instrument of some sort. When 'invisible ink' was used, it could be detected through the aopplication of heat or low voltage electricity and then of course there were reagents including iodine vapours which had the effect of showing the writings even if they were done using water, quite common I understand. Great lengths were gone to to hide these communications. The Germans in WW2 used a 3 step process such that the hidden writing would only be revealed after 3 separate applications of a reagent each spaced at 1 hourly intervals. Sounds a lot of trouble but there was a lot at stake.
5. Recently I posted some examples of micro writing that I have done by way of example, it was in the range of .3mm to .5 mm in height. This is similar to the range that I believe was used by both the owner of the book and Jestyn.
6. I believe that it is more than likely Jestyn was being trained by ALf Boxall in the use of micro writing. He admitted to being an intelligence officer and the hotel where they met was a 10 minute walk from Army HQ. Nurses were commonly trained for enciphering tasks as per Leo Marks's suggestions. Interestingly nurses in the UK used their nurse training as a front and rarely completed or qualified in that role.
7. To the code page. If you recall it is almost 18 months or even longer since I suggested that there was writing and numbers directly on the code page itself and there were a number of examples that were shown. This progressed to finding more examples of tiny writing within the actual letters of the code. In fact when you examine the code page in detail you can see tracks of letters and numbers some of which are dubious but others quite plain to see.
8. More recently I put forward a summation which showed a relationship between the letters on the code page and the first letters of the 75 quatrains in the Omar book. This naturally moved on to just what that relationship might mean given that there were these letters and numbers inside each of the letters of the code and some within the lines and flourishes on the code page. It occured to me that perhaps the letters and numbers within the code letters bore some relationship to the letters within the quatrains that commenced with the letter of the code. That is as far as I have progressed with this aspect. What they were doing I really don't know but I suggest that the information supports the notion that this was espionage, what it was about remians to be discovered. A fairly large deciphering task I would suggest given that some letters of the code and Omar book alike repeat themselves.
9. Jestyn's meeting with AB is, in my view was an indicator of her potential involvement in the field. The book and it's poem were a training exercise and I am not sure whether there was any particular meaning to the words and letters used by her. If we could establish that as in show the same kind of relationship that I think exists between the code letters and the 75 quatrains then we would have learnt a great deal.
I make no bones about the fact that this is a difficult concept to grasp and for good reasons. A lot of people have spent a great deal of time trying to open up the code page without success but a huge effort nonetheless. It would be hard for them to ditch all of their ideas in favour of this new idea even though it does have some background in fact.