[stringtemplate-interest] Multi-column output

[ilia at obnovlenie.ru]

I want a simple thing: to output my Picture[] pictures list as a
multi-column table.
Column number and width are managed solely by designer,
Total count of pictures is known beforehand surely.

E.g 12 pictures may be output as 2x6 table or 3x4 table or 4x3 table.. Or 12
in a single column.
Designer is the only one who knows.

How this thing is done with StringTemplate ?