PPT: Using LeftMargin or FirstMargin Yields Unexpected Results

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There are five RulerLevel classes, each of which corresponds to a possible indent level. The FirstMargin and LeftMargin values of RulerLevel 1 have a valid range of (-9.0 to 4,095.0). The valid range of values for the FirstMargin and LeftMargin properties for RulerLevel classes 2 through 4 are described as follows.

For each RulerLevel L in the set {2, 3, 4, 5}, the following equations describe the minimum value for the FirstMargin and LeftMargin properties:

   Min(RulerLevel(L).FirstMargin) = Max(RulerLevel(L-1).FirstMargin,
 
                                        RulerLevel(L-1).LeftMargin) + 9
 
   Min(RulerLevel(L).LeftMargin) = Max(RulerLevel(L-1).FirstMargin,
 
                                       RulerLevel(L-1).LeftMargin) + 9
				

If you assign a value that is between 4,096 and 8,182 to the FirstMargin or LeftMargin property, a sign bit is switched. The resulting values range from -4,096 to -10; these values are invalid. Assigning values that range from 8,183 to 8,191 results in values that range from -9 to -1; these values are valid.