## ~~function to do ... ~~

## Usage

    comment(x)
    comment(x) <- value

## Arguments

`x` | any R object
`value` | a `character` vector

## Description

These functions set and query a comment attribute for any R objects. This is typically useful for `data.frame`s or model fits.

Contrary to other `attributes`, the `comment` is not printed (by `print` or `print.default`).

## See Also

`attributes` and `attr` for ``normal'' attributes.

## Examples

    x <- matrix(1:12, 3,4)
    comment(x) <- c("This is my very important data from experiment #0234",
                    "Jun 5, 1998")
    x
    comment(x)

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