dlangspec.pdf?

[Walter Bright]

On 1/8/2013 3:57 PM, Andrei Alexandrescu wrote:
> One great thing about ddoc is that macros are
> infinitely flexible, and the expansion rules are not as weird as other macro
> systems such as M4.

I had one great advantage in it being the fifth text macro processor I'd 
designed :-)

I'd still like to see it done as a phobos module. Maybe an enhancement request?