The constants, operators and functions described in this section can be used to create Expression-defined Properties for Archicad elements.
Note for Imperial System Users (US/UK):
When using the Expression Editor in Archicad, avoid using the mathematical characters "/" and "-" to separate feet and inches or to write fractional inches. Archicad interprets these symbols as minus or division operators, which may result in unintended calculations (subtraction or division) in your expressions.
To prevent this, use decimal inches to enter expressions in the editor, even if your Working Units and Calculation Units are set to "Feet & Fractional Inches." This rule applies to any length and area-type properties.
Expression-Defined Element Properties