So, so often I find the need to have categories, sub-categories, filters, etc to have an option for no lines at all. There have been some related ideas in here, but I don't think any have touched on this very general, all-encompassing (as well hopefully easy to implement) attribute. I'm thinking of an option similar to adobe software (illustrator, ps, indesign) where your options are a)color or b) no/invisible line. It would be so helpful in cases where the linework tool needs to be used indefinitely - such as only wanting to see lines in section and not in elevation (using masses to create 3D property lines the will show up in sections), or not seeing certain lines in annotations and dimensions; and also where one doesn't have the option at all to override the linestyles (e.g. Topography). This issue has come up more times than I can count.
