I have a laptop computer that was bought in Portugal. However, I want to
change the style of the Axis to the 'American' stytle versus the 'European'
style.

For example, in America, if you determine the result for the fraction 1/10
you would write 0.10 as the result. However, in Portugal, you would write
0,10.

I can't seem to find the option to switch between the two system. Under
'Format Axis' I can't switch between the two and I can't seem to create the
American way of showing the axis.

Does anyone know how to do this?

Thanks in advance.