Consider these two sentences:

(1) 母はついてくるようにアリスに合図した (Mother signaled to Alice to follow her)

 

(2) 父は手で私に部屋を出ていくようにと合図した。 (Father gestured to me to go out of the room)

And another sentence which I suspect has the same use of と　as (2) but I cannot exactly say what it does:

(3) この本は子供を対象とした本です。(Unnatural: This book is a book that is done in order for children to be targets) (Natural: This is a book for children)

Now I deconstruct the use of AをBとC in (3) to mean "Do verb C to achieve state B in direct object A"

(Question) How would I understand the use of と in (2)? Since (1) does not require と yet has a similar structure involving ように. But XようにY means "to do Y so that X can happen". What happens when と is added to the mix as in (2)?

(Example sentences taken from WWWJDIC)

Consider these two sentences:

(1) 母はついてくるようにアリスに合図した (Mother signaled to Alice to follow her)

(2) 父は手で私に部屋を出ていくようにと合図した。 (Father gestured to me to go out of the room)

And another sentence which I suspect has the same use of と　as (2) but I cannot exactly say what it does:

(3) この本は子供を対象とした本です。(Unnatural: This book is a book that is done in order for children to be targets) (Natural: This is a book for children)

Now I deconstruct the use of AをBとC in (3) to mean "Do verb C to achieve state B in direct object A"

(Question) How would I understand the use of と in (2)? Since (1) does not require と yet has a similar structure involving ように. But XようにY means "to do Y so that X can happen". What happens when と is added to the mix as in (2)?

(Example sentences taken from WWWJDIC)