abstract class, all classes extend ippfp_element.
functions:
string type() - returns type of element.
string getName() - returns name of element.
setName($name) - sets the name of the element.
int size() - returns the size (in chars)
int height() - returns height (in chars)
int width() - returns width (in chars)
transform(&$app) - transforms an element into another elements output format, e.g. xhtml to pdf.
reset() - resets all attributes.
setValue($value) - sets the value.
string &$getValue() - returns the value.
clear() - clear buffer.
setColspan($colspan) - sets colspan.
setRowspan($rowspan) - sets rowspan.