In the documentation I found this:
Position within the bounding box of this glyph to which
xandycoordinates are anchored to. This can be a named anchor point liketop_leftorcenter, or a percentage from from left to right and top to bottom, or a combination of those, independently in width and height. If set toauto, then anchor point will be determined from textalignandbaseline.
I’ve always used the named anchor points, but I would like to use the percentages for a specific case I have. What is the format for this?
I couldn’t find any documentation/examples which use the percentage method for anchoring text.