# C Command [GstarCAD 2020](Help%20System/GSTARCAD/2020/Index.md) → [Commands](Help%20System/GSTARCAD/2020/Commands/(Commands).md) → [C](Help%20System/GSTARCAD/2020/Commands/C/(C).md) - [CAL](Help%20System/GSTARCAD/2020/Commands/C/CAL%20Command--e258b720fd50.md "CAL") - [CHAMFER](Help%20System/GSTARCAD/2020/Commands/C/CHAMFER%20Command--af97a98e0eaf.md "CHAMFER") - [CHANGE](Help%20System/GSTARCAD/2020/Commands/C/CHANGE%20Command--5050a70e53ec.md "CHANGE") - [CHPROP](Help%20System/GSTARCAD/2020/Commands/C/CHPROP%20Command--75bd6b9c4e41.md "CHPROP") - [CHSPACE](Help%20System/GSTARCAD/2020/Commands/C/CHSPACE%20Command--15e4e33f68a2.md "CHSPACE") - [CIRCLE](Help%20System/GSTARCAD/2020/Commands/C/CIRCLE%20Command--e30c78ac2285.md "CIRCLE") - [CLEANSCREENOFF](Help%20System/GSTARCAD/2020/Commands/C/CLEANSCREENOFF%20Command--e26f08028e29.md "CLEANSCREENOFF") - [CLEANSCREENON](Help%20System/GSTARCAD/2020/Commands/C/CLEANSCREENON%20Command--37997b532bec.md "CLEANSCREENON") - [CLOSE](Help%20System/GSTARCAD/2020/Commands/C/CLOSE%20Command--0445a746a9fa.md "CLOSE") - [CLOSEALL](Help%20System/GSTARCAD/2020/Commands/C/CLOSEALL%20Command--5d439a3c1323.md "CLOSEALL") - [COLOR](Help%20System/GSTARCAD/2020/Commands/C/COLOR%20Command--d6ff28f13faa.md "COLOR") - [COMMANDLINE](Help%20System/GSTARCAD/2020/Commands/C/COMMANDLINE%20Command--8a7f7eb196c1.md "COMMANDLINE") - [COMMANDLINEHIDE](Help%20System/GSTARCAD/2020/Commands/C/COMMANDLINEHIDE%20Command--6e8cc8aa15f6.md "COMMANDLINEHIDE") - [CONE](Help%20System/GSTARCAD/2020/Commands/C/CONE%20Command--c23789fb4a83.md "CONE") - [CONVERT](Help%20System/GSTARCAD/2020/Commands/C/CONVERT%20Command--e9b05613807b.md "CONVERT") - [CONVERTOLDLIGHTS](Help%20System/GSTARCAD/2020/Commands/C/CONVERTOLDLIGHTS%20Command--cf5109c9c833.md "CONVERTOLDLIGHTS") - [CONVERTOLDMATERIALS](Help%20System/GSTARCAD/2020/Commands/C/CONVERTOLDMATERIALS%20Command--ea2c1968e0cc.md "CONVERTOLDMATERIALS") - [CONVERTPSTYLES](Help%20System/GSTARCAD/2020/Commands/C/CONVERTPSTYLES%20Command--c220c5d3a1ff.md "CONVERTPSTYLES") - [COPY](Help%20System/GSTARCAD/2020/Commands/C/COPY%20Command--f415fd2c4375.md "COPY") - [COPYBASE](Help%20System/GSTARCAD/2020/Commands/C/COPYBASE%20Command--fc77e01585f2.md "COPYBASE") - [COPYCLIP](Help%20System/GSTARCAD/2020/Commands/C/COPYCLIP%20Command--058b15c226e4.md "COPYCLIP") - [COPYHIST](COPYHIST%20Command--b336ecfa50f4.md "COPYHIST") - [COPYLINK](COPYLINK%20Command--a02c586e42ea.md "COPYLINK") - [COPYTOLAYER](COPYTOLAYER%20Command--912d42fab920.md "COPYTOLAYER") - [CUI](CUI%20Command--17af895c08aa.md "CUI") - [CUIEXPORT](CUIEXPORT%20Command--088a0af30666.md "CUIEXPORT") - [CUIIMPORT](CUIIMPORT%20Command--61848f806f07.md "CUIIMPORT") - [CUILOAD](CUILOAD%20Command--f3ed5a0adb3a.md "CUILOAD") - [CUTCLIP](CUTCLIP%20Command--91000730042e.md "CUTCLIP") - [CYLINDER](CYLINDER%20Command--5d94d7fe43f6.md "CYLINDER") ---