This is an archived bug report. If you are experiencing a similar issue, upgrade to the latest release and if that does not solve the problem, submit a new bug report
From thread http://ellislab.com/forums/viewthread/138223/
Write Mode button missing from publishing fields. It shows up on one field but not the next where I need it.
Two fields, summary and body both have the same exact settings. It doesn’t make sense one would have the write mode and the other would not.
Screenshot available in thread.
ExpressionEngine implements Markdown Extra and BBCode. Please see the Markdown Extra docs and the BBCode Wikipedia article for a full reference.
**bold**, __bold__, *italics*, _italics_, ~strike/del~, `code()`
bold, italics, strike/del, code()
Link: [link title](https://example.com)
Image: 
[blockquote]...[/blockquote], [quote]...[/quote], and Markdown style:
> Some quoted text. > > This is all one quote.
[code]...[/code], and you can also specify the language for syntax highlighting, [code=php]...[/code]
GitHub flavored Markdown code fences are also supported:
```
public function decoderRing($str)
{
return str_rot13($str);
}
```