Total Length of Lines

Hi!

 Is it possible to get the  "total length" of many selected lines at the same time?

Currently when I selected more than one line, the field "Length" shows "Variable".

For Autocad users there is a script to make it, but in DraftSight I need to get one by one, it's take long time.

I use the length of lines to calculate the time machining  of some parts.

Thanks

Eduardo Bueno

Mazak