Random hoses in engine bay (3)

[Sprey]

Ok ive been wondering what these hoses do
theres 3 of them, 1 with a cap type thing maybe its a filter of some sort? and 2 others which have open ends.

this also this diagram in my vx which shows you them

but what im wondering what actualy are they for/ do ?

There normaly zip tied into the bracket but ive undone them just for the photo.

I did a search but havent found anything.
Ive uploaded the pic of the diagram in a big size so its viewable without hurting your eyes