Working with FormulaCalculator
Quick calculator
Use the quick calculator for short formulas and immediate results. The white formula area shows what you enter, while the yellow display shows the current numeric result. Press = to finalize the calculation and add it to the print roll.
The variable drawer contains the ten legacy variables x, y, z, a, b, c, d, r, h, and w. The function drawer provides financial, geometric, and conversion functions.
Calculation sheets
A calculation sheet is an editable list of comments, assignments, and formulas. Each line is evaluated in order, so a variable defined near the top can be used by any later line.
For a complete guide to creating, calculating, saving, and reporting a sheet, see Working with sheets.
Use # at the beginning of a line for comments. Variable names may contain several characters; camelCase names such as effectiveTreadDepth remain readable without being interpreted as LaTeX subscripts.
The calculated pane supports display rounding, automatic/scientific/engineering notation, zooming, and a movable divider. Calculation sheets can be saved and loaded as JSON files. The JSON contains the title, description, and editable source from the left pane.
PDF reports
Choose PDF Report to provide a report title and description, then save a PDF containing the comments as text and the formulas as typeset mathematics. The selected decimal and notation settings are respected in the report.
Ask OpenAI
OpenAI support is optional and requires an API key configured in Preferences. It can:
- simplify the current formula line;
- rearrange a formula to calculate a selected identifier;
- answer a question and return comments and directly calculable formulas;
- use an attached reference image, such as a geometry drawing or circuit diagram.
When asking a follow-up question, the current calculation sheet is included as context so existing variable names and definitions can be reused.
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