Dear ConTeXt folks, using the Neo keyboard layout [1] I am able to insert the superscript + and - directly: ^+=⁺ and ^-=⁻. […] ConTeXt ver: 2011.05.18 22:26 MKIV fmt: 2011.5.27 int: english/english […] mkiv lua stats > math script replacements - U+0207A:⁺ U +0207B:⁻ (n=4) […] The following minimal example demonstrates the problem which is visible when ⁺ or ⁻ is used between `\{start,stop}align`. --- minimal example --- \starttext \placeformula \startformula a⁺ \quad b⁻ \stopformula \placeformula \startformula\startalign a⁺ \NC≠ \NC b⁻ \NR a^+ \NC≠ \NC b^- \NR \stopalign\stopformula It should work though $a⁺$ and $b⁻$. \stoptext --- minimal example --- Please find all files attached. Thanks, Paul [1] http://neo-layout.org/