2012

Text Alignment
Controls the orientation (horizontal or aligned) of dimension text whether it
is inside or outside the extension lines. (DIMTIH and DIMTOH system
variables)
Horizontal
Places text in a horizontal position.
Aligned with Dimension Line
Aligns text with the dimension line.
ISO Standard
Aligns text with the dimension line when text is inside the extension lines,
but aligns it horizontally when text is outside the extension lines.
Preview
Displays sample dimension images that show the effects of changes you make
to dimension style settings.
New, Modify, and Override Dimension Style Dialog Boxes | 633