Cartes du Ciel is free software released under the terms of the
GNU General Public License
For a precise form of control over the Field of Vision, see the lower part of View → Postion.
The left mouse click behavior can be changed by using the Change mouse mode button
For a precise positioning of your chart, see the upper part of View → Position.
Enter the rotation mode
Quit the rotation mode using the same key as to enter
The following is only applicable when the display of stars is set to parametric mode.
While “edit label” mode is on: