The Position of Contact is very important because it holds the meaning in a sign.
The eye focuses on the Position of Contact when
reading. This was tested with a group of Deaf
adults who were skilled in SignWriting (the DAC),
and we found that when the Position of Contact was not written, readers had to piece the sign
together slowly, but when the two hands were written
close together in the contacted position, like a unit,
the sign was read faster.
Writing the Position of Contact
also creates smaller signs in width and height,
which makes writing in vertical columns more centered
and compact, making the columns themselves less
Writing the Position of Contact, showing the hands close together in a unit, also eliminates the need for writing a single Touch Contact Star to show the two hands are touching each other. Since you can see the two hands are touching each other by their placement, the single Touch Contact Star is no longer as necessary. It is not wrong to write the single Touch Contact Star near the Position of Contact, but it is not necessary either. This simplifies the writing of signs.
Double Touch Contact Symbols, however, are written no matter what, because Double Touch, or Touch-Touch, is a movement, not a position. It is only single Touch Contact Stars that can be and are frequently eliminated because we write the Position of Contact.