Runs Method
Returns a TextRange object that represents the specified subset of text runs. A text run consists of a range of characters that share the same font attributes. For information about counting or looping through the runs in a text range, see the TextRange object.
expression.Runs(Start, Length)
expression Required. An expression that returns a TextRange object.
Start Optional Long. The first run in the returned range.
Length Optional Long. The number of runs to be returned.
Remarks
If both Start and Length are omitted, the returned range starts with the first run and ends with the last paragraph in the specified range.
If Start is specified but Length is omitted, the returned range contains one run.
If Length is specified but Start is omitted, the returned range starts with the first run in the specified range.
If Start is greater than the number of runs in the specified text, the returned range starts with the last run in the specified range.
If Length is greater than the number of runs from the specified starting run to the end of the text, the returned range contains all those runs.
A run consists of all characters from the first character after a font change to the second-to-last character with the same font attributes. For example, consider the following sentence:
This italic word is not bold.
In the preceding sentence, the first run consists of the word "This" only if the space after the word "This" isn't formatted as italic (if the space is italic, the first run is only the first three characters, or "Thi"). Likewise, the second run contains the word "italic" only if the space after the word is formatted as italic.
Example
This example formats the second run in shape two on slide one in the active presentation as bold italic if it's already italic.
With Application.ActivePresentation.Slides(1).Shapes(2) _
.TextFrame.TextRange
With .Runs(2).Font
If .Italic Then
.Bold = True
End If
End With
End With