is the a way to draw permanent construction line? ( until I want to delete them :) )

 From:  stevecim
4957.1 
The way I work I tend to use straight cures has semi-permanent construction lines.
is the a way to draw permanent construction line?


Also, would it be possible to writ a script, like ArrayGems but instead of arraying x number of objects to a curve, I want to place X number of objects to a bunch of points, still using a circle around the object to control depth, like ArrayGems.

(happy to try a code it my self, if some could point me in the right direction :) )