Determines a minimum dimension distance. If a dimension is less than the specified distance, then the software does not place a dimension in the drawing. If a dimension is less than the specified distance and is part of a dimension chain, then the software absorbs that dimension into the larger dimension.
The surrounding dimension that absorbs the smaller dimension is determined by the direction of the dimension. For vertical dimensions, the smaller dimension is absorbed by the larger dimension underneath it. For horizontal dimensions, the smaller dimension is absorbed by the larger dimension to its left.
To specify the minimum dimension, type a decimal value in the text box.
1  Dimension 

The software interprets the value that you type as paper space units and not model space units.

To manually edit the .xml file, specify the minimum dimension. Enclose this value within the following .xml tags.
<minimumDimension>0.0</minimumDimension>