What is miniedition?

Some articles on miniedition:

Sabayon Linux - Releases
... Version Release Date Notes 3.0RC1b miniEdition 1 July 2006 3.0RC2 16 August 2006 Distribution name switch from RR4 to Sabayon miniEdition 3.0 RC2 24 August 2006 3.0 14 September ...