s{(?m)^=BEGIN_SAMPLE\s+(.*)$}{->> /.sample-column
.sample-pic
[[!img/$1.png| {{.width-100 img/$1.png}}]]

->> /.sample-desc
}g

s{(?m)^=END_SAMPLE\s+(.*)$}{
[[!stl/$1.stl|.sample $1.stl]]
-<< 2

}g

s{(?m)^=SAMPLES}{->> /.empty}

s{(?m)^=NEXT-ROW=*}{
.clear-both

.next-sample
}g