Answer:
The ruler is a measurement tool found with some software programs that allow the program's user to align graphics, text, tables, or other elements on a page. When enabled, the horizontal ruler appears at the top of the document, and the vertical ruler on the left. In the pictures below, are examples of how the ruler may appear in Microsoft Word.
Explanation:
1. Form the possessive singular of nouns with 's. Follow this rule whatever the final consonant. Thus write, This is the usage of the United States Government Printing Office and of the Oxford University Press.
