In ClarisDraw, you have the ability to create a line using the option 'hairline'. A hairline in ClarisDraw has a point size of 0.01, which hypothetically is the narrowest line size than can be created. When saving a copy of a ClarisDraw file as a .WMF file, with any line width lower than 1, it will be converted to a 1 point line. This is due to a limitation of the .WMF translator and currently, there is no workaround.