31.5.6.6 Specifying graphic text background
You can specify whether the background around graphic text is transparent or opaque:
; BackMode = 1 (transparent) or 2 (opaque) for graphic text
> 31 Working with graphics > 31.5 Controlling image appearance in RTF output > 31.5.6 Converting graphic text > 31.5.6.6 Specifying graphic text background