How to do formatting in iup textbox?

[Matt Welland]

What is the equivalent to iup.user in the Chicken iup egg?
local tags = *iup.user* { selectionpos = "7:24", bgcolor = "255 128 64" }
text1.addformattag = tags


Or more generally, how to apply formatting to text in the textbox widget?

Thanks,

Matt

--
Complexity is your enemy. Any fool can make something complicated.
It is hard to keep things simple. - Richard Branson.