R Markdown xtable format parts of caption

Question

how to format one word of a caption in verbatim code? I want to format the word swiss of the caption:

```{r echo=FALSE}
swisstable <- sapply(swiss,function(x) {
  c(Mean = mean(x))
} )
```

```{r echo=FALSE}
swisstable <- xtable(swisstable, auto = TRUE)
```

```{r results='asis', echo=FALSE}
xtable(swisstable, digits = 1, environment = left, caption = "überblick über den Datensatz swiss")
```

Answer 1

等待大神答复