[R] how do I add text lables on QQ plot

[Abby Spurdle]

> and I would like to get the plot like the one in attach.
> Please advise,

This is a bad idea.
Plots should be *easy* to interpret.

Try to keep plots relatively simple, avoiding unnecessary details.
For nontrivial plots, use a caption to describe the main features of the plot.
(That's where your text should go).

I note that you've asked a number of questions about QQ plots.
I'd recommend that you use QQ plots in a standard way, without
frequently trying to modify/customize them.