options = {
 "Something", "2", "3"
}
current = 1

-- in update:

if btnp(2) then
 current = (current - 1) % #options
elseif btnp(3) then
 current = (current + 1) % #options
elseif btnp(4) then
 if current == 1 then
  something()
 elseif current == 2 then
  something()
 elseif current == 3 then
  something()
 end
end

-- in draw:

for i=1,#options do
 local o=options[i]
 oprint(o, 1, i * 8 + 1, i == current and 7 or 5) -- tmp
end