With tool of the top toolbar you can get the figure under different formats :
Pour images export and clipboard use, you can improve the resolution of the image using a scale factor.
For this, use icon of the top toolbar and enter a value in the editorScale factor for export of images (ranging from 0.25 to 0.5). Generally a value of 2 will improve the quality of the exported image when the figure will be pasted in your word processor.
To be noticed : When exporting the figure with unity length in cm, if the size of the image is not accurate after pasting it (it may happen under Libre-Office), you can manually specify the figure dimensions. When the dialog box asking for the unity length in cm is opened, check the dimensions of the figur displayed under the editor.
When you paste the figure in your word processor, give to this image the dimensions you noted in the dialog box (right click on the image and Format under Libre-Office).
Important : To use a selection frame, use icon on the top toolbar.
Check Display a frame of given dimensions.
Enter the dimensions in pixels.
The frame appears on the figure.
If a selection frame is present, Only the inside of this frame will be exported.