Posted by Gary S on Jan 13, 2018; 4:49pm
URL: https://forum.librecad.org/Layer-List-question-tp5715685p5715686.html

The hashtag (#) toggles the Construction layer (refer to http://wiki.librecad.org/index.php/LibreCAD_users_Manual#Layers).  Draw a short line and click the hashtag icon and watch what happens to the line.  It should go from showing it point to point to being continuous (an infinite length).

Cheers.