In the feature table editor for the type of line style there is an entry "Custom." How can one use them ? As I have no access to this option do I have to define first a new line style to use it ?
If you are in the MicroStation environment when editing the feature table you will have access to select "Custom" at which time you should see the list of custom line styles available depending on which resource files are associated with the design file. As you click on each option you should see the line style change in the dialog, but sometimes the scale is so small you may not be able to make it out unless you change the scale factor.