Words divided across lines (i.e. where the line-break does not indicate a word-break) should be indicated by lb with a break with a value of "no". This, among other things, allows the XSLT to generate the hyphen at the end of the preceding line.
For further explanation of the lb element, see the guidance for Line Breaks.
proc-
urator
Transformation using the example EpiDoc P5 stylesheets: