# FormulaPointing ```csharp public static class FormulaPointing ``` Namespace `SharpCell.Grid` · package `SharpCell.Grid` Picking references with the mouse while a formula is typed, as in Excel: where the caret takes one, and how a picked cell or range is written. ## Methods ### CanPoint(string, int) ```csharp public static bool CanPoint(string text, int caret) ``` Whether a click on a cell puts a reference at the caret rather than entering the text: the text is a formula and the caret, past any spaces, follows `=`, an opening bracket, a comma or an operator, outside quoted text. **Parameters** - `text`: The text being typed. - `caret`: Where the caret is, from 0. ### Reference(CellArea, Worksheet, Worksheet) ```csharp public static string Reference(CellArea area, Worksheet? sheet, Worksheet? formulaSheet) ``` The reference a formula takes for cells picked on a sheet: `B3`, `B3:C5`, whole columns `C:D` or rows `2:2`, with the sheet's name in front when they are on another sheet than the formula's. **Parameters** - `area`: The cells picked. - `sheet`: The sheet they are on. - `formulaSheet`: The sheet of the cell being edited.