вставка на стороне сервера(простой набор директив, помещаемых в текст HTML-документа на стороне сервера, позволяет составлять выходной (отправляемый клиенту) HTML-документ из нескольких файлов)
server-side include A mechanism for including dynamic text in World Wide Web documents. Server-side includes are special command codes that are recognized and interpreted by the server; their output is placed in the document body before the document is sent to the browser. Server-side includes can be used, for example, to include the Date and Time stamp in the text of the file
