Cancellation in Spatial Material

[ScotlandCETBS]

Please review the attachment concerning cancellation in spatial material and provide your insight.

Thanks!

Daniel Sullivan

 

[kdejute]

Daniel, I'm afraid I do not see an attachment. Perhaps it was too big? If that is the case, maybe you could "zip" it into a folder and try again? Or you could possibly email it to kdejute@nationalbraille.org.

–Kyle

[kdejute]

What follows is a brief summary of our conversation outside of this forum.

In spatial material we use the cancelation rule in GTM 4.1.6. The issue that we run into when
dealing with this is that the definition for an item in GTM 12.1 is interpreted several ways and
can tend to cause confusion.

...

What if I have a spatial calculation with something like "1,99" and then a space for alignment, and only that second 9 is cancelled? How should I limit the effect of the "line through previous item" indicator?

I had to revisit the examples in the 2020 NBA workshop "Spatial Problems: Rules and Advice" [a recording of which is on NBA's website] and the decisions that Jason Armour, other members of the NBA UEB Tech Committee, and I made before I could respond confidently. Now that I've done that, I can say that the solution proposed in Mr. Sullivan's message is in line with the best information we have at this point, and – most importantly – gives rise to accurate braille. In short, I think it best to use braille grouping indicators (rather than spaces) to limit the effect of the "line through previous item" indicator.

Braille on!
–Kyle

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