Form Action
From the menu go to: Insert > Forms > Form Action.

When the user clicks on the "Submit" button, the content of the form is sent to another file. The form's action attribute defines the name of the file to send the content to.

<form method="post" action="yourscript.php"></form>

You can handle many form-processing tasks using client-side scripting. For such purposes you need a server-side application such as a Common Gateway Interface (CGI) script. CGI scripts can be written in PHP, Perl, C, Java, or other programming languages. There are several sites on the Web that offer free CGI scripts that you can use (see Tutorials). You can modify those scripts to fit your needs. You can also ask your Internet service provider or Web team if there are any available CGI scripts that are already configured to run on your server.

For a PHP form/action example, from the menu go to: Insert > PHP Tags > PHP Scripts > Form. Left click to open. PHP must be installed on your server or system for functionality. See also: What's PHP?