\usemodule[wolf-rul]

\starttext

\def\hotkey#1{\inframed[corner=00, offset=0pt]{\ #1\ }}

text \hotkey{Ctrl} text \hotkey{T} text

\def\hotkey#1{\inframed[corner=00, offset=0pt]{\enspace#1\enspace}}

text \hotkey{Ctrl} text \hotkey{T} text

\def\hotkey#1%
  {\inframed
     [corner=00,
      offset=0pt,
      leftoffset=1ex,
      rightoffset=1ex]
     {#1}}

text \hotkey{Ctrl} text \hotkey{T} text

\stoptext
