# Breaking Changes for Version 12.45.20181.0

undefined

## Content



Refer to the following breaking changes in each feature.

*   [Calculation Engine](/spreadnet/docs/latest/readme/BreakingChanges/breakingchangesSpWin/breakingchangeswin20181/calculationengine)
*   [SheetView](/spreadnet/docs/latest/readme/BreakingChanges/breakingchangesSpWin/breakingchangeswin20181/sheetview20181)
*   [Style](/spreadnet/docs/latest/readme/BreakingChanges/breakingchangesSpWin/breakingchangeswin20181/style)
*   [DefaultSheetSpanModel](/spreadnet/docs/latest/readme/BreakingChanges/breakingchangesSpWin/breakingchangeswin20181/defaultsheetspanmodel)
*   [EnhanceSortInfo](/spreadnet/docs/latest/readme/BreakingChanges/breakingchangesSpWin/breakingchangeswin20181/enhancesortinfo)
*   [ColumnHeader/RowHeader/ColumnFooter](/spreadnet/docs/latest/readme/BreakingChanges/breakingchangesSpWin/breakingchangeswin20181/columnrowmodel)
*   [GrapeCity.Spreadsheet.DataValidations](/spreadnet/docs/latest/readme/BreakingChanges/breakingchangesSpWin/breakingchangeswin20181/datavalidations)
*   [New Style System](/spreadnet/docs/latest/readme/BreakingChanges/breakingchangesSpWin/breakingchangeswin20181/NewStyleSystem)
*   [LegacyBehaviors](/spreadnet/docs/latest/readme/BreakingChanges/breakingchangesSpWin/breakingchangeswin20181/LegacyBehaviors)