The following patch(pasted below and also attached as an attachment) fixes the bug that \setupFLOWlines[rulethickness=whatever] have no effects: --- m-chart.lua.orig 2013-03-12 09:22:42.000000000 +0800 +++ m-chart.lua 2013-08-15 10:52:08.617268698 +0800 @@ -499,7 +499,7 @@ local linesettings = settings.line context("flow_shape_line_color := \\MPcolor{%s} ;", linesettings.color) context("flow_shape_fill_color := \\MPcolor{%s} ;", linesettings.backgroundcolor) - context("flow_shape_line_width := %s ; ", points(linesettingsrulethickness)) + context("flow_shape_line_width := %s ; ", points(linesettings.rulethickness)) elseif focus[cell.focus] or focus[cell.name] then local focussettings = settings.focus context("flow_shape_line_color := \\MPcolor{%s} ;", focussettings.framecolor) @@ -580,7 +580,7 @@ context("flow_touchshape := %s ;", linesettings.offset == v_none and "true" or "false") context("flow_dsp_x := %s ; flow_dsp_y := %s ;",connection.dx or 0, connection.dy or 0) context("flow_connection_line_color := \\MPcolor{%s} ;",linesettings.color) - context("flow_connection_line_width := 2pt ;",points(linesettings.rulethickness)) + context("flow_connection_line_width := %s ;",points(linesettings.rulethickness)) context("flow_connect_%s_%s (%s) (%s,%s,%s) (%s,%s,%s) ;",where_cell,where_other,j,cellx,celly,what_cell,otherx,othery,what_other) context("flow_dsp_x := 0 ; flow_dsp_y := 0 ;") end