On Screen Dimensions

A common tool, available on many ASL forms and task panels is the Measure icon:

This allows the fixed value or derived value assigned to the standard to be displayed in the graphical view and includes the attribute description as indicated on the forms;

The detailed attributes are determined by their defaults, that means, evaluated by the engineering criteria such that the value complies with the conditions or constraints defined against it, these conditions or constraints can include max/min, valid values, PML expressions, optimized values or real values. Each of the corresponding gadgets has tool tips to provide feedback to the user of the numerical range defined by the engineering criteria for that particular attribute.

The direction attribute is not defined by the standard; this is a system default which is derived by the application via the positions of the principle work points.