演算の規則

https://knowledge.autodesk.com/ja/support/revit-lt/learn-explore/caas/CloudHelp/cloudhelp/2019/JPN/RevitLT-Model/files/GUID-A0FA7A2C-9C1D-40F3-A808-73CD0A4A3F20-htm.html



https://knowledge.autodesk.com/ja/support/revit-lt/learn-explore/caas/sfdcarticles/sfdcarticles/kA230000000eJ8O.html