DIRECT allows you to set the orientation of dimension
arrows relative to their associated witness lines (for
linear and angular dimensions), or geometry (radius and
diameter dimensions). 

Indicate a new direction by choosing from the following
options:

IN  - to position the arrows inside the boundaries of
      witness lines (for linear and angular dimensions)
      or the reference entity (for radius and diameter
      dimensions).

OUT - to position the arrows outside the boundaries of
      witness lines (for linear and angular dimensions) 
      or reference entities (for radius and diameter 
      dimensions).
