Measure the width of the console

Usage

ruler(width = getOption("width"))

Arguments

width: Width of rule

Examples

ruler()
#> ----+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8
#> 12345678901234567890123456789012345678901234567890123456789012345678901234567890