1. Table format:tfrmt()

The table format (“tfrmt”) object is the most fundamental buildingblock in tfrmt. tfrmt is a way to predefine the non-data components ofyour tables and how the data will be handled once added. tfrmt allowsyou to specify cell formats and labelling such as column headers,footnotes, etc. In addition, tfrmts can be layered.

2. Plans:*_plan()

Much of the tfrmt is divided into “plans” which provide the blueprintfor how the table will look. These plans are as follows:

• Body plan (body_plan): define how cells will beformatted
• Column plan (col_plan): define column and spanningheaders, order columns, and drop unnecessary columns
• Row group plan (row_grp_plan): define labelling forgroups of rows and add styling to groups of rows
• Column styling plan (col_style_plan): define how columnvalues will be aligned and set their widths

Additional features that use this system:

• Footnotes can be specified via footnote plan(footnote_plan) to define what footnote contents and wherethey should be applied.
• Pagination can be specified via a page plan (page_plan)to define where the table should be split for separating onto multiplepages.

3. Structures:*_structure()

The structure objects are for defining how thelocation ofwhere a specific styling should be applied. Within a plan, one or morestructures may be provided. Each structure specifies the layers within aplan. For example, in the body plan, each “frmt_structure” objectdefines how a set of values (e.g., all “p-values”) should be formatted.Structures are primarily row-oriented, and can range from broad (e.g.,apply to all relevant rows in the data) to specific (e.g., apply to allrelevant rows within a specific grouping value). The one exception tothis iscol_style_structure, which specifies the colwisestyling.

In the figure below, each colour represents a different formatstructure (frmt_structure) to be passed in the table bodyplan (body_plan).

The following structures are available:

• Format structure (frmt_structure) inside of body plan(body_plan)
• Column label spanning structure (span_structure) insideof column plan (col_plan)
• Row group structure (row_grp_structure) inside of rowgroup plan (row_grp_plan)
• Column style structure (col_style_structure) inside ofcolumn style plan (col_style_plan)
• Footnote structure (footnote_structure) inside offootnote plan (footnote_plan)
• Page structure (page_structure) inside of a page plan(page_plan)

4. Elementselement_*()andFormats:frmt_*()

The element and format objects are for defining theaesthetics of the table. Inspired by ggplot2, elements providea mechanism for performing aesthetic modifications such as numericrounding (frmt()) or the positioning of group labels(element_row_grp_loc). These are passed through structureobjects.