Without further ado, the following was found: Issue: invisible → partially invisible "Causes all half-lines to be printed, effectively double spacing the output. " "Normally, a minimal space output format is used which will suppress empty " "lines. The program never suppresses two consecutive empty lines, however. " "The B<-2> option is useful for sending output to the line printer when the " "output contains superscripts and subscripts which would otherwise be " "invisible."
