[pdftex] Spacing between letters ---plain pdftex

[John R. Culleton]

On Tuesday 26 June 2007 11:37, John R. Culleton wrote:
> There is a LaTeX sty that with some clumsiness will set a string of
> letters to a particular degree of "tracking" positive or negative.
> What I am wondering is if there is a primitive or plain tex value
> that I can modify for a given string to put letterspacing between
> glyphs such as is often used in a running head for fiction, often
> with smallcaps.  I am thinking of something like
> \headline={\sc\foo 1.5 Here is My title}
>
> where \sc is a smallcap font and \foo is the parameter I need to
> reset to get more interglyph spacing.

Thanh Han The answered offlist with an exact solution involving the 
pdftex primitive \letterspacing as described here: 
http://www.sendspace.com/file/0y11fy

Whatever would we do without him?

-- 
John Culleton