Check out the documentation : https://en.wikibooks.org/wiki/OpenSCAD_User_Manual/The_OpenSCAD_Language ----- $ Runsun Pan, PhD $ libs: doctest , faces ( git ), offline doc ( git ), runscad.py ( 2 , git ), synwrite ( 2 );   $ tips: hash ( 2 ), matrix ( 2 , 3 ), sweep ( 2 ), var ( 2 ), lerp , animation ( gif , prodVid , animlib ), precision ( 2 ), xl-control , type , rounded polygon , chfont , tailRecur ( 2, 3 ), isosphere ( 2 ), area , vol/center , RGB , CurvedImg ; $ Apps: rollApp , blockscad , openjscad , on AWS ( pdf ) -- View this message in context: http://forum.openscad.org/Generating-Code-tp18016p18032.html Sent from the OpenSCAD mailing list archive at Nabble.com.