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4.3.1 Page Layout

   The Page Layout Part is a scrollable, multi-page container part which 
   allows you to see, on screen, how a document will look when it is printed. 
   Thus it gives you control of the size, position, and Z-order of its 
   embedded parts.  The Page Layout Part is only allowed to be a Root Part. 

   Figure 124 shows the Page Layout Part that has two embedded parts, the 
   Text Part and the 2D Graphics Part embedded inside the Text Part. 


 


                                              



 
   Figure 124. Page Layout Part 

   The Page Layout part allows you to select the printer queue to which the 
   document will be printed.  Printer Setup is available in the Document 
   submenu. 

   The Page Layout Part has more features that help you to arrange embedded 
   parts, such as Alignment Grid, Rulers and Margins that can be made visible 
   or invisible. 

   Another important function of the Page Layout Part is arranging the 
   Z-order (front-to-back list) of its embedded parts.  This means that you 
   can place one part in front another part, and be able to change their 
   position so that the second part is in front of the first part. 

   The Page Layout Part has the ability of having more than one page, and 
   each page is a separate frame.  You can insert and delete pages. 

   The Page Layout Part implements frame negotiation.  Frame negotiation is 
   the process whereby an embedded part and its containing part agree on the 
   what frames the embedded part can have.  It only allows embedded frames to 
   grow to the margins, and will grant additional frames on subsequent pages. 
   For instance, if you embed the Text Part within the Page Layout Part, as 
   you type in text, the Text Part will will request additional frame space 
   for every additional line you type.  It will automatically add additional 
   frames on new pages if the text is larger than one page.  The Text Part 
   prompts to request an additional display frame, which the Page Layout part 
   will then grant on the next page.  The Page Layout part will grant space 
   horizontally until it reaches the point where it has run into the margins, 
   whereby it will deny the request at this point. 

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