Many of the new GC instructions used metavariables like \typeidx and
\dataidx in their prose, but x and y in their formalisms. To make the
prose and formalisms more consistent, and for consistency with the metavariables
used for other pre-existing instructions, use the x and y metavariables
everywhere.
tlively
commented
1 year ago 
👈
Many of the new GC instructions used metavariables like
\typeidxand\dataidxin their prose, butxandyin their formalisms. To make the prose and formalisms more consistent, and for consistency with the metavariables used for other pre-existing instructions, use thexandymetavariables everywhere.