'colorcolumn' is a comma-separated list of screen columns that are highlighted with ColorColumn hl-ColorColumn. Useful to align text. Will make screen redrawing slower. The screen column can be an absolute number, or a number preceded with '+' or '-', which is added to or subtracted from 'textwidth'.

:set cc=+1        " highlight column after 'textwidth'
:set cc=+1,+2,+3  " highlight three columns after 'textwidth'
:hi ColorColumn ctermbg=lightgrey guibg=lightgrey

When 'textwidth' is zero then the items with '-' and '+' are not used. A maximum of 256 columns are highlighted.

(default "")

not available when compiled without the +syntax feature