SET allows you set parameters by choosing from the 
following options:

ARROWS   - to specify the orientation and style of 
           dimension arrows.

WIT/LDR  - to control the display of witness lines and
           leader lines for newly-created dimensions.

DIM REP  - to set the existing linear, radial, 
           diametrical, and ordinate dimension 
           representations.

TEXT     - to control the text attributes for notes.

TOLER    - to specify the automatic tolerancing of a 
           dimension.

STANDARD - control the display of leading and/or trailing
           zeros, to position parallel dimension text for
           ANSI or ISO, to toggle between automatic and 
           manual creation of dimension text, to display a
           parallel dimension horizontally, aligned with
           the dimensions leaders, or to create radius or
           diameter dimensions with shortened solid leader
           lines.

UNITS    - specify scaling units other than those used in
           the construction of the part itself.

AUTO UP  - control whether the program automatically 
           updates the displayed values of dimensions
           selected for some command sequences.

