http://www.w3.org/TR/html401/interact/forms.html

method="post": This attribute specifies which HTTP method will be used to submit the form data set.

Possible (case-insensitive) values are "get" (the default) and "post".

enctype="multipart/form-data": The default value for this attribute is "application/x-www-form-urlencoded".

The value "multipart/form-data" should be used in combination with the INPUT element, type="file".

action="http://www.response-o-matic.com/mail.php": this is the script that actually doesn't the email sending.

accept-charset="UTF-8": This attribute specifies the list of character encodings for input data that is accepted by the server processing this form.

http://www.w3.org/TR/html401/interact/forms.html

type="text": what kind of widget is needed (text|password|checkbox|radio|submit|reset|file|hidden|image|button).

name="name": assigns a control name.

id="name" -- assigns a name to an element. This name must be unique in a document.

size="40" -- tells the user agent the initial width of the control. The width is given in pixels except when type attribute has the value "text" or "password".

In that case, its value refers to the (integer) number of characters.

value="" -- attribute specifies the initial value of the control. It is optional except when the type attribute has the value "radio" or "checkbox".