A simple variation of the Zoom Extents command, the addition of the ++ implies an imaginary border around the drawing. The purpose of this border is to enable the selection of entities that may lie exactly on the edge of the drawing extents. The use of Extents++ will move the drawing approximately 0.25 inch (0.635 cm) away from the controlling edges of the current view. The border size is based on real dimensions, not drawing dimensions. Therefore, the border will always be ¼” wide.
A drawing’s extents are defined by its coordinate extremities. Every line, piece of text, luminaire and all other entities have 3-dimensional coordinate values (X, Y, Z), the range of these values is used to compute the drawing extents. The smallest and largest coordinate values dictate the drawing extents in the X, Y and Z dimensions. When Zooming Extents++, the overall drawing is sized to fit within the confines of the current view selected on your computer’s screen with the ¼” border. This command is functional in Plan, Elevation and Isometric views. The drawing will automatically be centered within the View boundaries.
The Zoom-Extents++ command is transparent - it may be selected within another command without canceling the current command.
From the View
menu choose Zoom-Extents++, or
from the Common toolbar select 
.