Boolean a line

I am just trying Nodebox for the first time after years of processing.

I would like to add a bunch of lines together to get the outline around them. For example I would line to draw the outline around a cross by with two calls to line() instead of 12.

It seems I can only boolean closed paths. At present is seems my only option would be to create a linePath() function that takes stroke and cap type into account to create a closed path using beginPath()...endPath().

Am I correct here or is there an easier solution?

Found what I was after here...
http://nodebox.net/code/index.php/shared_2009-10-09-13-33-21

With this I can create a path by drawing a line and defining the stroke width and cap style.