Modeling To Dimensions; X,Y,Z Coordinates; Absolute And Relative Coordinates; Introduction - Autodesk ALIAS 2010 Manual

Introduction

Modeling to Dimensions

In the previous exercises you have focused on building complex forms, using
freeform shapes.
In this exercise, you will focus on geometric shapes and working to accurate
dimensions.

X,Y,Z Coordinates

To specify dimensions and locations in Alias, you will refer to the X, Y, Z grid
directions.
An X, Y, Z location is called a coordinate.
To enter a coordinate, type the X, Y, and Z values into the prompt line. They
must always be in the X, Y, Z order, and the three numbers can be separated
by either a space or a comma: for example:

Absolute and Relative Coordinates

Coordinates can be specified in two ways: absolute or relative.
Absolute coordinates are always measured from the origin.
Relative coordinates are measured from the last coordinate used.
In the prompt line, (ABS) or (REL) is shown, depending which mode you are
in. To switch modes, type the letter 'r or the letter 'a either on its own or
before typing the coordinate.
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