A controller class and subsidiary classes represent the rich text and provide methods to convert {HEAD ~ html} to {TAIL ~ the memory structure} and back, representing the rich text in a relational database, retrieving the rich text from a relational database, and presenting the rich text for editing 
to
A controller class and subsidiary classes represent the rich text and provide methods to convert { HEAD ~ html } to { TAIL ~ the memory structure } and back , representing the rich text in a relational database , retrieving the rich text from a relational database , and presenting the rich text for editing
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH