Circle CircleCenter calculation calculates circle center point from three arc points. Tangent calculation calculates tangent lines between two circles.
New circle can be added by functions Add objects or Edit line.
Upper part fields display object type and three freely selectable attributes.
List of object attributes not displayed in the above fields.
Saves the current point.
Activates the data copying from another object. The other object containing data is pointed by the mouse. By default only the object code is copied. With the Shift-key all attributes are copied including the line number. New points are then added to that line.
Active file element receiving saved points.
Displays current edit mode (move, rotate, add, etc.). The X button quits the mode and returns to the normal state.
CheckDuplicate special setting in Settings/Start Program defines whether active file is checked for duplicate points.
There are some special settings related to this function.
Settings affecting edit and calculation function behavior.
Defines which attributes are displayed first in the list. By default T1,T2,T3,T4,T5.
See also: Using special settings