An Artificial Construction

[ReneZ]

and, of course, VMS, because the spaces here are most likely not normal spaces—at least not all of them...

Just to avoid a misunderstanding....
While I clearly expressed that I have some doubt that the apparent spaces in the MS delimit units that are equivalent with words in a plain text, I am also not aware of any evidence that they are not. 
This is just a hypothesis.
Or, rather than a hypothesis, I want to point out that this is an assumption that appears completely reasonable, but is not a given.

The fact that certain character shapes preferably appear adjacent to these apparent spaces could be seen as evidence for either option. (I don't think it is valid evidence either way).