TAG comment: "then Level 1 too"

Hello www-qa,

In section 4.1, the text: "Profile X defines an implementation of Level
2 (then Level 1 too) for a specific class of products for example." is
unclear.

Does it define a separate implementation of level 1? Does it say that
all Level 1 content conforms with profile X? Perhaps "(and thus,
implicitly, Level 1 also)" would be better. Its not clear which of
several possible points the parenthetical clause is seeking to make.
Please clarify it.

-- 
 Chris Lilley                    mailto:chris@w3.org
 Chair, W3C SVG Working Group
 W3C Graphics Activity Lead