Original Tip Date: May 2003
Updated: February 2010
MicroStation V8i - The From Line Top line spacing calculates the distance to the next line as: Top of line + Line Spacing.
This method is analogous to the AutoCAD Exactly line spacing setting. It provides rigid control over line spacing, and is generally used for table-based text. However, since the spacing does not vary, the lowest point on one line may overlap the top of the next line.
Note:
The number used in the Line Spacing field is a factor of the text height and not a value.
In a metric file, the numerical value of the Line Spacing in the Element Information dialog will display the same value as the Line Spacing in the Tool Settings dialog
In an imperial file, the value in the Line Spacing in the Element Information dialog will be displayed in meters. For example, the text height is set to 10 feet, the line spacing is set to 0.5 of the text height which is 5 feet. In the Element Information dialog, this is converted to 5 / 3.048 = 1.6404 meters.
Refer to the following for additional information:
http://communities.bentley.com/communities/other_communities/askinga/w/askinga/automatic-line-spacing.aspx
AskInga Tip #287