This only affects overlap checks but not casts. When using physics checks and overlaps with an attached tag text the default behaviour is that the text size is relative to the shape size.
It may be desired that the text has a fixed worldspace size independent from the scale of the drawn shape.
This can be achieved with this global setting that forces all text at drawn check and overlap shapes to a fixed worldspace size.
The default value of 0 means "constant worldspace text size is disabled".
The value defines the width of one text letter in worldspace units.
This setting competes with the forcedConstantScreenspaceTextSize_relToScreenHeight_forOverlapResultTexts setting.
If both settings are activated (that means set to something else than 0) then "forcedConstantScreenspaceTextSize_relToScreenHeight_forOverlapResultTexts" wins and "forcedConstantWorldspaceTextSize_forOverlapResultTexts" is ignored.