Insert line to textedit

[wirasto]

How to insert line into textedit ? So far I use this code

QTextCursor cursor(ui->textEdit->textCursor());
cursor.insertHtml("<hr>");

QTextCursor cursor(ui->textEdit->textCursor());
cursor.insertHtml("<hr>");

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But, hr can't be styled with <hr style="height:2px;color:red;">. I look qt have a class with name QTextLine. But I don't know and haven't a sample how to use that class for insert line into textedit