Macro tr 

macro_rules! tr {
    ($($all:tt)*) => { ... };
}

Example

use rtml::*;

assert_eq!(
    table![
        tr![
            td!["Cell 1,1"]
        ],
        tfoot![
            tr![
                td!["Footer 1"]
            ]
        ]
    ].render(),
    "<table><tr><td>Cell 1,1</td></tr><tfoot><tr><td>Footer 1</td></tr></tfoot></table>"
);