Screen preferences

[Nuala Mahon]

I have just bought my refurbished MAC Pro and have double clicked something which has made my screen like one for the visually impaired (huge text font). I cannot find how to revert to the original screen font size.
Thanks for help
Nuala

 

[Neil321]

apps>system preferences>display

you should be able to do things there or if you mean your browser
view>text size