Labeling 3 different points on plot

I have plotted data, other than that I want to add 3 different points label and name them in the same figure.

[Scott MacKenzie]

It would help if you provide the code you currently have to generate the initial plot.

Answer 1

[dpb]

text(1:3,rand(1,3)*10,{'A','B','C'})
xlim([0 5]),ylim([0 10])

produced

All you need do is define what x,y pairs and label you want...