SLADE map line thickness

Hi, in your new batch of Preacher map views, it appears the lines are rather thin. Please take a look at User:Xymph/Map_views#Conclusions and generate map views with line thickness 3. This results in more legible thumbnails when the views are embedded in map pages, as well as the sized-down versions on file pages. It does appear you already use scale -4, so that's good. --Xymph (talk) 17:22, 11 December 2018 (CST)