Preferences in VectorWorks are user choices that can change the way that VectorWorks appears to work, can change the way that drawings appear and can control some of the keyboard shortcuts.There are two sorts of Preferences in VectorWorks, VectorWorks Preferences that affect all the files and Document Preferences that control settings specific to a file. To find preferences, go to the Menu Bar and choose:
File > Preferences > VectorWorks Preferences..., or
File > Preferences > Document Preferences...
There are several preferences to choose from and the choices depend on your way of drawing. So try out different preferences and see which ones suit you.