When participating in a chat discussion, your messages are instantaneously relayed to other members in the chat room while other members' messages are instantaneously relayed to you. Subscribing and unsubscribing to the list is accomplished by sending a properly formatted e-mail message to the listserver. Some listservs are designed to facilitate discussion among its subscribers, and all messages generated on the listserv go to all subscribers. Subsequently, any responses, in turn, are shared with all subscribers as well. Most website software enables the designer to develop a form with open fields in which users can provide information and return it to the webmaster via e-mail.
Forms can serve many purposes, from a questionnaire to a suggestion box to an order form.
PDF documents PDF stands for Portable Document Format. Special software, called Adobe Acrobat, is needed to create PDF documents. Converted PDF documents retain the look and layout of original documents and can be viewed on any type of computer. Readers use Acrobat viewers to open the PDF documents. You can distribute Acrobat Reader, one of the Acrobat viewers, without charge from the manufacturer.