If the turn player summons a Link monster with one or more active markers, THEN you can special summon other extra deck monsters to the zones indicated by the active markers (as well as main deck monsters)
"Fully stocked, I calculated one time it's like $26,000, on average." Packgrab sells Pokmon, One Piece and Yu-Gi-Oh cards through vending machines inspired by similar setups in Japan
As a result, Link Monsters cannot be summoned in defense position, forced into defense position as the result of a card effect, or be flipped into face-down defense position
however, it might not stay that way for long
"Shaddoll" still sees play even to this day, with recent support in the "Shaddoll Showdown" structure deck with the "Invoked" engine