An HCDT file is a workbook template created by Cell, a spreadsheet application included with the Thinkfree Office NEO suite. It contains formatting of one or more worksheets of data. HCDT files are used to create multiple spreadsheets with the same formatting.

HCDT file open in Hancom Thinkfree Office NEO Cell In Cell, you can choose to save a spreadsheet in a variety of file formats, such as .CELL, .XLSX, .XLS, .ODS, or .CSV file. You can also save a spreadsheet as a template, which is saved by Cell in the HCDT template. HCDT files are convenient for creating spreadsheets with similar formatting and data such as mathematical models, invoices, budgets, or addresses. Cell is one of three applications available in the Thinkfree Office NEO suite, which is similar to the Microsoft Office suite. The following applications are included in Thinkfree Office NEO: Word - Word processor similar to Microsoft Word. Cell - Spreadsheet program similar to Microsoft Excel. Show - Presentation program similar to Microsoft PowerPoint.