: Scroll to zoom in/out; click and hold the wheel to "Pan" (move around the drawing).
: Increase or decrease the size of an object by a specific ratio. 6. Dimensioning and Exporting User Manual for LibreCad 2.0
: LibreCAD uses the .dxf format, which is compatible with almost all other CAD software (like AutoCAD). : Scroll to zoom in/out; click and hold