I must respond to this. IMO, photos are often not all so
revealing (and esp. if aggravated by patterned --think
“camouflage”!-- cordage). Whereas in drawing, the artist
can ensure that some particular X-ing or other feature is
represented. (One can note that in some of your own
photos you’ve seen need to draw in outlines of the
not-easily-distinguished rope parts.)
Further, I will usually write into my parallel-lines knots
drawings “flow #s” --numbering each visible-in-sketch
knot part per the flow into the knot from the S.Part.
So, in this way I can illustrate the knot more in its
actual geometric form versus an exploded-to-show-all
image; the ambiguities pure image gives are made clear
by the #ing of parts --one sees that this part here, #5
say, must connect over to what is label’d #6. ta-da
This isn’t always needed in a given image, which might
be amply perspicuous; but it otherwise also provides
a label for knot parts which might be used in some
verbal description/discussion about it.
While I’m posting,
let me urge that people put dates into ISO format
–YEAR-MONTH-DAY. There is too much risk of
confusion in other ordering. E.g., one of the yChan
knots has 9.11.2018 date : Americans will read that
at --a sadly special date to them-- “Nine Eleven”,
Sept.11,
and not its intended 9th November.
(Sometimes I deviate, and mix numerals & letters,
and so might put the above as “9nov2018” or other;
this has an English bias to the month indicator which
is the alpha part (put in lowercase so to contrast
with effectively uppercase numerals!).