Would like to change a linestyle in a dgn to appear differently when plotted.
Open the Print dialog
From the 'Resymbolization' menu select 'New Pen Table' and save to a location and name of your choice (Alternatively select Edit Pen Table to modify an existing one).
Highlight the section to work with under the heading 'Element Section Processing Order'. This is 'NEW' for a new pen table. (See the Edit menu item for creating new sections)
Select the 'Style..' button on the Modify Pen Table Dialog under the 'Element Selection Criteria' tab. Highlight the linestyle in the design to be resymbolized and choose OK
On the 'Element Output Actions' tab place a check against 'Style:' and use the magnify glass to pick the required output linestyle.
Save the Pen table and close the Modify Pen Table dialog.
Referesh the Preview to verify result before printing.