bb_pageHorizontalGuide.Rd
draws a horizontal guideline at a specified y-coordinate on a BentoBox page
bb_pageHorizontalGuide( y, params = NULL, col = "grey55", default.units = "inches", ... )
y | A numeric or unit object specifying y-coordinate of guide |
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params | an optional "bb_params" object space containing relevant function parameters |
col | color of guideline |
default.units | A string indicating the default units to use if y is only given as numeric vectors |