I’ve found it: It’s in Deformations: Sphere.
Curved text issue - #8 by AhabGreybeard
Curved text issue - #10 by AhabGreybeard
Also, you can use a Text brushtip in Pipe Mode which is ok once you get used to it:
Curved text issue - #6 by AhabGreybeard
I can remember doing things but I have problems remembering when and where I did them
(I’ll have forgotten this topic by the New Year.)