Creating and using patterns.
If you use some algorythms of a calculation very often, you won't have to do monkey work
again and again. Create a pattern and apply it to any further calculations.
Create a calculation with a universal useful algorythm (e.g. sample mortgage calculation). Specify a name and default analytical properties. Then click menu option
"Patterns" and select "Save current calculation as pattern".
"Save as pattern" menu item is enabled only when the calculation is a saved document (not a blank).
You can apply patterns to a blank only. Create a new
calculation with 
button. While the calculation is still
not saved, click "Patterns" menu option. "Load a
pattern..." submenu item is now enabled. Select it to call your patterns list.
Select a needed pattern from the list and click Ok. Any items
and analytical properties will be copied from a pattern
into a document.