Thank you for your patience. In this instance, we recommend the "directly over" approach to the question mark. We don't believe a grade 1 indicator is needed for the question mark, as it is at the end of the sequence and would not be confused with an opening quotation mark.
Please note, also, that the check mark at the bottom of the page is brailled as dots 4, 146, officially adopted a few weeks ago. This replaces the proposed symbol of dots 5, 146.
This is still wonderfully relevant. However, we now believe the vertical juxtaposition indicator (GTM 14.3.3) should be used in transcribing "question mark over equals sign."
APH's UEB Math Tutorial describes this method for transcribing a "question mark appears directly above the equal sign in print" in its Lesson 6.7.
So, what I would recommend for ≟ is ;;8]"7
The vertical juxtaposition indicator (instead of the directly above indicator) more accurately communicates the intent of the symbol ≟, because it lets the question mark and the equals sign have separate meanings instead of making the equals sign's meaning be "modified" by the question mark.
This reply was modified 3 weeks, 2 days ago by kdejute.
This reply was modified 3 weeks, 2 days ago by kdejute. Reason: correct simbraille
This reply was modified 3 weeks, 2 days ago by kdejute. Reason: add grade 1 symbol indicator before question mark at the beginning of a symbols-sequence
This reply was modified 2 weeks, 2 days ago by kdejute. Reason: used grade 1 word indicator instead of multiple grade 1 symbol indicators