Have some explanations about the meaning of symbology properties in Bentley Geospatial Administrator?

HI:

I use Bentley Geospatial administrator to define the features. I want to define the point-text's width/height. but the some features of symbology puzzle me .including scale/stylescale/overridescale/height ajustment scale/. is there any documents  about  whole explanations of  these words ? In Bentley Map help documents ,i can't find the explanations.

Thanks!