[NTG-context] Macro for acronyms

At the moment I have I my document: {\switchtobodyfont[1.25em]\bf M}ust {\switchtobodyfont[1.25em]\bf S}hould {\switchtobodyfont[1.25em]\bf C}ould {\switchtobodyfont[1.25em]\bf N}ot now But I like to have a macro for this, so I could just do: \Acronym{Must Should Could Not~now} Is more readable and when I want a change (for example another color for the first letter), this is much easier to implement. How should I implement such a macro? -- Cecil Westerhof