Link to current vectors send as email  
You can define vectors as (X, Y, Z)
for example (1, 3, 5) assuming that the vector begins at point (0, 0, 0).
If the vectors starts at a point different from (0, 0, 0) you can define it as
(X1, Y1, Z1 : X2, Y2, Z2) for example (1, 2, 1 : 2, 1, 0)
