Hi all, Thank you for your recent assistance with calligraphic math fonts. I am trying to use a matrix example from math-ali.mkxl, but I am running into an issue. When I try to use the location parameter, I receive the error A <box> was supposed to be here. I have also tried both location=bottom and location=top, but both give the same error. Do you have any ideas on how I can get the matrix in the desired locations? Thank you in advance for your help. Best regards, Jacob \starttext \startformula \startmatrix[left={\left(},right={\right)}] \NC A \NC B \NR \NC C \NC D \NR \stopmatrix = \startmatrix[left={\left(},right={\right)},location=low] \NC A \NC B \NR \NC C \NC D \NR \stopmatrix = \startmatrix[left={\left(},right={\right)},location=high] \NC A \NC B \NR \NC C \NC D \NR \stopmatrix \stopformula \stoptext