显示更多长列名称

Question

有没有办法在Rstudio中的数据表的字符串列中显示更多字符。

例如：

library(data.table)

dt <- data.table(StringVar1 = c('This is a very very very very very very very very very very very very very very very very long string'),
                 StringVar1 = c('This is a short string'))

View(dt)

输出将是：

如何显示StringVar1的全部内容？