There are four types of annotations
Dimensions
Angular dimensions
Text
North Arrow
Annotation visibility may be toggled on and off
Dimensions are designed to be read from the bottom or right side of a printed
page
The annotation text stays the same size (so it is readable), if the text will
not fit between the dimension lines it is not shown. If text annotations overlap
they are not shown.
Lower
area is zoomed in on - notice how annotations change
