\starttext

\startluacode

local c = utf.byte("a")

context("Character %c has unicode %04H aka %04U.",c,c,c)

context.par()

context.type(string.formatters["Character %c has unicode %04H aka %04U."](c,c,c))

context.par()

context("The current textwidth is %p.",\number\hsize)

\stopluacode

\stoptext
