create a tabulation mark properties setting object for Word or RTF. Results can be used as arguments of fp_tabs().
Once tabulation marks settings are defined, tabulation marks can be added with run_tab() inside a call to fpar() or with \t within 'flextable' content.
fp_tab(pos, style ="decimal")
Arguments
pos: Specifies the position of the tab stop (in inches).
style: style of the tab. Possible values are: "decimal", "left", "right" or "center".