Highlight (Halo) elements in plot

Sean,
You are right about having duplicates of line work, or any element being bad practice. There is another way....

Attach the model to itself as a reference. Give it a logical name something like HALO. Then in a pen table or design script print the elements in the HALO reference with a thicker line weight and a different color. Also make sure the priority of the reference is lower than the priority of the master file.

If you have  drawn all your work on specific level names you can use  overrides and make all the line work much thicker and a yellow or any colour you havent used..

You can even do this with a pentable if you have level standards  so it will always apply to specific levels to just print different ie a specific colour and weight ..

With text its much easier we just have background fill applied to a specific text style..

If you dont have a  lot of lines, create a sub model self ref the default model that has the line work now  create a level called filled offsets...

set your active level to that and  copy parallel all you line work either side of the lines now you can turn all these into  shapes or regions by closing them off and  create region by flood and have a fill applied to the region dont offset too much just enough to equal a highlighter marker pen...then just ref attach this model back to the master drawing and  tell it to go under or use transparency...

I just thought of an old school quick way ... place markers like crosses at the corners of the drawing  ie the  sheet edges and print to paper only the line work and corner crosses

now put a piece of tracing paper not the yellow kind  ,  or try  film or grease proof lunch wrap paper yes the super market still has this...

now trace first the  corner markers use a ruler these have to be very accurate make sure you tape down everything first, now trace over  your lines with a big fat coloured fluorescent marker ( not fluorescent yellow photocopiers deliberately exclude fluorescent yellow ).

Next step take the tracing it to your  photocopier and scan highres colour the traceing, ref attach the  raster of the scanned tracing you can use the 4 corner marks to warp the raster to the original cad crosses and  clip the raster so you cant see the crosses and  put transparencey  on the raster  and it will act like you have your halo effect..

Good job for new grad or junior or if you have your  kids come to work day !

I love the old school methods hey  you do what you have to if time is tight