initialize_editors = function(font_height, filename, screen_top)
	Editors = {}
	local font = love.graphics.newFont(font_height)
	love.graphics.setFont(font)
	-- initialize multiple editor widgets
	local editor_width = 40*font:getWidth('m')
	local width_remaining = App.screen.width - Margin_left - Margin_right
	local left = Margin_left
	repeat
		local editor =  edit.initialize_state(Margin_top, left, left + math.min(editor_width, width_remaining), font, font_height, math.floor(font_height*1.3))
		table.insert(Editors, editor)
		width_remaining = width_remaining - editor_width - Margin_left
		left = left + editor_width + Margin_left
	until width_remaining < editor_width
	-- have them all operate on the file's lines
	if filename then
		love.window.setTitle('broadsheet.love - ' .. filename)
		Editors[1].filename = filename
		load_from_disk(Editors[1])
	end
	Text.redraw_all(Editors[1])
	for e=2,#Editors do
		local editor = Editors[e]
		editor.lines = Editors[1].lines
		Text.redraw_all(editor)  -- TODO: share fragments between editors
	end
	Editors[1].screen_top1 = screen_top
	resync_editors()
end