Autodesk AUTOCAD 2006 Command Reference Manual page 623

delta length
object selected
Angle
Changes the included angle of the selected arc by the specified angle.
Enter delta angle <current>: Specify an angle or press ENTER
Select an object to change or [Undo]: Select one object or enter u
The prompt repeats until you press ENTER to end the command.
delta angle
object selected
Percent
Sets the length of an object by a specified percentage of its total length. Percent
also changes the angle of an arc by a specified percentage of the total included
angle of the arc.
Enter percentage length <current>: Enter a positive nonzero value or press ENTER
Select an object to change or [Undo]: Select one object or enter u
The prompt repeats until you press ENTER to end the command.
Total
Sets the length of a selected object by specifying the total absolute length from
the fixed endpoint. Total also sets the included angle of a selected arc by a
specified total angle.
Specify total length or [Angle] <current>: Specify a distance, enter a positive nonzero
value, enter a , or press ENTER
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