Condes shows this dialog box when you have selected a control in the "Edit Controls" pane and pressed "Del" or selected the menu item Control / Delete.

If you proceed and click "Delete control from this canvas", then the control is removed from this canvas (and from other canvases that use the same controls as this canvas).  

The control may still exist on a canvas that does NOT use the same controls as this canvas.  However, if this is not the case, then the control is deleted entirely from the event.

This dialog box is shown only if the control that you are about to delete is currently in use on a course.

 

The dialog box shows a list of courses that Condes believes are affected if you proceed with deleting the control.  The list contains courses that use this control:

• courses on this canvas
• courses on another canvas that use the same controls as this canvas
• if a course is also active on a canvas with controls that are NOT linked with this canvas, it is not be shown in the list. The course exists on two canvases with SEPARATE controls, so Condes then assumes that there is a map exchange between the two canvases.
• Relay courses are not shown

Below the list of courses, there is a check box:

Delete also the control from the above courses

If you choose this option, Condes deletes the control, and also traverses all courses and removes all instances of the control from the courses shown in the list.

This operation cannot be undone with the Undo function.

You should normally not delete a control that is still used on a course.

You have two options:

Delete the control

If you choose this option, Condes deletes the control - and - if the checkbox is also checked, the control is removed from the courses shown in the list.

Cancel

Choose this option to cancel the delete operation and leave the control untouched.

Use caution:

If, for example, a course uses control code 45 as control number 5 on the course, and control code 45 does not exist, then there will be a gap on the course instead of control number 5.   The course then has an "inconsistency".

It might be fine to delete the control if you intend to create a new one with the same code.   This makes the courses complete again.