comments (// or /*...*/) comments

## Description

A sequence of two consecutive slashes `//` out of a string definition marks the beginning of a comment. The slashes as well as all the following characters up to the end of the lines are not interpreted.

Another way to comment a block of code is to use /* at the beginning and */ at the end. It is more useful than // which must be positioned at the beginning of each line to comment.

Inside a function, the first comment lines, up to the first instruction or an empty line may be used to provide the default contents for the function help.

## Examples

    g=9.81// the gravity

    text='a//b'

    /* As this comment is quite long to be on many lines,
    the symbols slash and star to start the comment
    and star and slash to end the comment are used */

    function y=myfunction(x)
      // myfunction computes y=x^2+1
      // x should be a vector or matrix
      y=x^2+1
    endfunction

    help myfunction

## See also

- head_comments
- slash
- backslash

## History

6.0 `/* .. */` block comments introduced.