activeSheet             Get/set active sheet of the workbook
addCreator              Add another author to the meta data of the
                        file.
addFilter               Add column filters
addStyle                Add a style to a set of cells
addWorksheet            Add a worksheet to a workbook
all.equal               Check equality of workbooks
as.character.formula    'as.character.formula()'
auto_heights            Compute optimal row heights
buildWorkbook           Build Workbook
cloneWorksheet          Clone a worksheet to a workbook
col2int                 Convert Excel column to integer
conditionalFormat       Add conditional formatting to cells
conditionalFormatting   Add conditional formatting to cells
convertFromExcelRef     Convert excel column name to integer index
convertToDate           Convert from excel date number to R Date type
convertToDateTime       Convert from excel time number to R POSIXct
                        type.
copyWorkbook            Copy a Workbook object.
createComment           create a Comment object
createNamedRegion       Create / delete a named region.
createStyle             Create a cell style
createWorkbook          Create a new Workbook object
dataValidation          Add data validation to cells
deleteData              Delete cell data
deleteDataColumn        Deletes a whole column from a workbook
freezePane              Freeze a worksheet pane
getBaseFont             Return the workbook default font
getCellRefs             Return excel cell coordinates from (x,y)
                        coordinates
getCreators             Add another author to the meta data of the
                        file.
getDateOrigin           Get the date origin an xlsx file is using
getNamedRegions         Get named regions
getSheetNames           Get names of worksheets
getStyles               Returns a list of all styles in the workbook
getTables               List Excel tables in a workbook
get_worksheet_entries   Get entries from workbook worksheet
groupColumns            Group columns
groupRows               Group Rows
if_null_then            If NULL then ...
insertImage             Insert an image into a worksheet
insertPlot              Insert the current plot into a worksheet
int2col                 Convert integer to Excel column
loadWorkbook            Load an existing .xlsx file
makeHyperlinkString     create Excel hyperlink string
mergeCells              Merge cells within a worksheet
modifyBaseFont          Modify the default font
names                   get or set worksheet names
openXL                  Open a Microsoft Excel file (xls/xlsx) or an
                        openxlsx Workbook
openxlsx                xlsx reading, writing and editing.
openxlsxFontSizeLookupTable
                        Font Size Lookup tables
openxlsx_options        openxlsx Options
pageBreak               add a page break to a worksheet
pageSetup               Set page margins, orientation and print scaling
protectWorkbook         Protect a workbook from modifications
protectWorksheet        Protect a worksheet from modifications
read.xlsx               Read from an Excel file or Workbook object
readWorkbook            Read from an Excel file or Workbook object
removeCellMerge         Create a new Workbook object
removeColWidths         Remove column widths from a worksheet
removeComment           Remove a comment from a cell
removeFilter            Remove a worksheet filter
removeRowHeights        Remove custom row heights from a worksheet
removeTable             Remove an Excel table in a workbook
removeWorksheet         Remove a worksheet from a workbook
renameWorksheet         Rename a worksheet
replaceStyle            Replace an existing cell style
saveWorkbook            save Workbook to file
setColWidths            Set worksheet column widths
setFooter               Set footer for all worksheets
setHeader               Set header for all worksheets
setHeaderFooter         Set document headers and footers
setLastModifiedBy       Add another author to the meta data of the
                        file.
setRowHeights           Set worksheet row heights
setWindowSize           Set and Get Window Size for xlsx file
sheetVisibility         Get/set worksheet visible state
sheetVisible            Get worksheet visible state.
sheets                  Returns names of worksheets.
showGridLines           Set worksheet gridlines to show or hide.
temp_xlsx               helper function to create tempory directory for
                        testing purpose
ungroupColumns          Ungroup Columns
ungroupRows             Ungroup Rows
worksheetOrder          Order of worksheets in xlsx file
write.xlsx              write data to an xlsx file
writeComment            write a cell comment
writeData               Write an object to a worksheet
writeDataTable          Write to a worksheet as an Excel table
writeFormula            Write a character vector as an Excel Formula
