To Control Dimension Text Orientation
You can control the positioning of dimension text, relative to the leader lines, by setting the default text orientation Detail options corresponding to individual dimension type. To modify the text orientation of individually selected dimensions, use the Dimension ribbon tab.
1. Select the dimension that you want to modify. The Dimension ribbon tab opens.
2. Click the Display button, and on the Display panel, select from the following options in the Text orientation list:
Default
Uses the default value from the text orientation Detail options corresponding to individual dimension type.
ASME
Positions dimension text horizontally. Text is vertically centered about the elbow line (ASME standard). This option is not available for chamfer dimensions.
ISO-above
Positions dimension text horizontally. Text is above elbow line (ISO standard).
ISO-above-extended
Positions dimension text horizontally. Elbow is below text and extends to width of text (ISO standard).
Parallel to and above leader
Positions dimension text parallel to and above leader line (JIS standard).
Parallel to and below leader 
Positions dimension text parallel to and below leader line (JIS standard).
Depending on the text orientation style you select, the text is displayed on the screen.
* 
The angdim_text_orientation Detail option controls the display of angular dimensions.
Text Orientation of Different Types of Dimensions
Depending upon the type of dimension you select, the following text orientation options are available on the Dimension ribbon tab:
Dimension Type
Corresponding Detail Option
Text Orientation Options Available
Linear Dimension
default_lindim_text_orientation
Default
Horizontal
Parallel to and above leader
Parallel to and below leader
Angular Dimension
default_angdim_text_orientation
Default
Horizontal
Parallel Outside
Horizontal Outside
Parallel Above
Ordinate Dimension
default_orddim_text_orientation
Default
Horizontal
Parallel-Centered
Parallel to and above leader
Parallel to and below leader
Radius/Diameter/Center Leader Dimension
default_raddim_text_orientation / default_diadim_text_orientation / default_cldim_text_orientation
Default
ASME
ISO-above
ISO-above-extended
Parallel to and above leader
Parallel to and below leader