Word automatically applying styles

[gwh]

Hi everyone,

Whenever I type in a few words in a document on the one line and then
say either bold, italicise or underline the words, when I press return
Word automatically applies one of the inbuilt heading styles.

I wondered if someone could tell me how to prevent this from
happening?

Thanks for any advice.

 

[gwh]

Sorry all,

I just found the answer under autocorrect. I couldn't find it earlier
becasue I was looking under preferences!!