| sub | Hide the label at the top of each panel with FALSE. |
| ndisp | Hide just the n display in the panel label with FALSE. |
| myl, mxl | Adjust the range of the y- and x-axis, e.g., myl = c(0, 10). |
| ylas, xlas | Change the orientation of the axis labels (the numbers or level names on each axis). 0 = parallel to axis, 1 = horizontal, 2 = perpendicular to axis, 3 = vertical. |
| font.axis, font.sub | Change the font by a code. Generally, 1 = plain, 2 = bold, 3 = italic, 4 = bold italic. |
| cex.axis, cex.sub | Change the font size of axis labels by the set magnification factor. |
| col.axis, col.sub | Change label colors with a code or name (e.g., col.axis = '#303030'). col.axis applies to axis labels and lines/tick marks. col.main applies to the panel labels. |
| pch, cex | Change the points' style (e.g., pch = 1) or size (e.g., cex = c(points = 2)). |
| drop | drop['bet'] can affect the layout of panels; e.g., drop = c(bet = FALSE) will show empty panels if there are levels of between without data. |
| mfrow | Specifies the number of rows and column. This is normally set based on the levels of between, but can be overwritten (e.g., mfrow = c(2, 3) would make a layout of 2 rows and 3 columns). |
| mar | Adjust the spacing between the labels and the plotting area: c(bottom, left, top, right), e.g., mar = c(1, 1, 3, 0). |