WordPress: warn the reader that the post is old

Often (writing software and technology) che l’articolo che oggi è attuale, tomorrow has already passed. There is at least un plugin per WordPress to notify the reader that the post you're reading was written long ago, che è una soluzione perfetta e pronta all’uso, groped but I also wanted to change the code of my theme to add this simple function automatically.

I state that the following steps create a box (in this case yellow) prima del titolo dell’articolo. (more…)