Setting text labels for numbered entities

The config file d2g_lang_**.ini has settings to change the labels for things like chapters and tables:

[NumberFormatsText]
ChapterNum = Chapter
TableNum = Table
FigureNum = Figure
EquationNum = Equation

What’s the correct approach for removing the label entirely, e.g. rendering the title as “4. Installing the Software” instead of “Chapter 4. Installing the Software”?