Thank you for your answers and referencing the sections of the Interim Manual for Foreign Language. That answers my questions for the font attributes, the arrowhead, and the superscript.
However, I'm still confused with the enlarged brace. Primarily because my example is more complicated than the one shown in 18.3.9 of Braille Formats. First, if I am to follow that example, I will apparently need to move the "En" column to the left of the enclosed list. But secondly, and more importantly, it appears to me that the other three columns (Terminan En, Cambian and Ejemplos) relate to each other like rows in a table. I am not 100% sure that the data in the "En" column is meant to be a list, it looks more like a statement, so I was wondering if this table could be reformatted as a list table with the En column as a subheading and ignore the brace?