Coordinates can almost always be entered by clicking on them by left mouse click (LMT) or by keyboard. By using the keyboard there are different options, entering the coordinates absolute or relative.
Absolute coordinates are entered after the cluster X-Coordinate/Y- Coordinate 5/10,5. Therefore determines a point with X-Coordinate equals 5 and Y-Coordinate equals 10.5
Relative coordinates are entered after the cluster @X-Coordinate/Y-Coordinate. @5/10.5. Therefore determines a point 5 units in the direction of X and 10.5 units in the direction Y starting from the most recent entered point.
Also there’s the possibility to specify a direction by mouse and define the distance by keyboard. To do so, a simple numerical value has to be entered (for example 10,25).