Dear All, according to http://texdoc.net/texmf-dist/doc/latex/microtype/microtype.pdf pdfTeX offers fine tuning of: (1) Character protrusion (2) Font expansion (3) Tracking (4) Additional kerning (5) Interword spacing AFAIK ConTeXt covers 1+2+(3?). In recent discussion Hans mentioned experimental 'space kerning'. Is it anything related to above features (4)? Are there any plans to cover the rest? Thanks, Jan