Math

This section is the syntax. You will define names, attach units, convert answers, and drive values with input boxes, sliders, and lists.

Where the buttons live

Open the Math tab. Algebra, Compare, Solve block, and Matrix / Vector sit on the left. Then come Operators ▾, Functions ▾, Constants, Units, and Symbols.

Two related controls live on other tabs. The worksheet unit system is on Home, in the System group. The Autocomplete switch is in Home → Settings.

A slider is not a ribbon button. Right-click an assignment you have already written and add one from that menu, or convert that assignment to an input box. A list is its own region. Insert it from the Insert tab.

Three operators

:= defines a name. A trailing = prints the answer. == compares two values. Use the wrong one and the line will not do what you expect. The expressions page takes them in turn.

The pages

1. Expressions and assignment — what to type to define a name, and how to get a number onto the page.
2. Variables and scope — which regions can see the name you just defined, and what happens if you define it twice.
3. Units — how to attach kN/m to a number, and what Calculeaf does when the dimensions do not agree.
4. Unit systems — your client works in feet and pounds; how to show them that without retyping the sheet.
5. Conversion with to() — how to force one answer into lbf and keep it there.
6. Autocomplete — why a suggestion list appears under the cursor, and how to drive it from the keyboard.
7. Greek letters and symbols — the quickest route to θ or σ without hunting through a picker.
8. Sliders — how to sweep an input through a range and watch the sheet respond.
9. Input boxes — how to turn a numeric assignment into a field someone can type in, then lock the rest of the page.
10. Dropdown lists — how to switch a whole set of inputs between load cases or material grades in one click.

Start with expressions and assignment. That is the page with the typing in it.