Drawing orthogonal lines

I recently discovered this option, which was unknown to me and, according to some YouTube video tutorials, is unknown to many LibreCAD users. Until now, I've mainly used the Snake tool to draw orthogonal lines, but I recently discovered another option that, at least for me, is perfect:
When you want to draw an orthogonal line from a specific point at a specific distance, you can use the following key combination:
-If it's the first point of a line or polyline, first mark the starting point, then type the distance from the line you want to draw and press Ctrl+the arrow in the direction you want to draw.
-If you want to continue from that last point, simply repeat the last step.
I'm sure many people already knew this way of drawing orthogonal lines, but for me it was quite a discovery.

Many thanks again to the developers.

Well, yes and no.

Indeed, that combination (CTRL+KEY_UP/DOWN/LEFT/RIGHT) is convenient for drawing orthogonal lines.

However! It's not limited to lines only.

It just provides a handy way to specify a coordinate. In other words, it allows to define a point that is related to the current position of Relative Zero - one is located in direction specified by KEY_.. on distance specified by entered value.

Therefore, such way will work for ALL places where the input for the coordinate is expected (say, center of circle etc.)