# Strange style conversion indicator appeared when type “a Pre”

I got the following strange style conversion indicator when I was typing a Pre(character a and Pre separated by a space) in an input cell:

I have no clue why it was triggered and I don't even know this kind of conversion indicator is possible.

So is it a potential bug? Or can you explain this behavior?

Configuration informations:

Mathematica version: 10.0.1

Operating system: Windows 8.1

Edit: Now I realized that it is possible to convert the style of a cell by literally typing Convert to ...in an input cell. But can you enlighten me where this feature is documented?

• From reference.wolfram.com/language/ref/CodeAssistOptions.html it looks like the option is "AutoConvertEnable". – chuy Oct 1 '14 at 18:57
• Please apply the bugs tag only after there is confirmation or at least consensus that an issue is in fact a bug. – Mr.Wizard Oct 3 '14 at 19:40
• @Mr.Wizard Sorry, I will remember that. – Naitree Oct 3 '14 at 19:44
• That's OK. It helps to read the pop-up description on tags; in this case it reads: "This tag is reserved for questions where the problem has been vetted by this community and the observed behavior is confirmed to be a bug. Please do not use this tag for new questions." – Mr.Wizard Oct 3 '14 at 19:48
• @Mr.Wizard Oh, got it. Thanks for the tip! – Naitree Oct 3 '14 at 19:55