It would be nice to be given addition arguments for further usage.
var u = "hello"
var l = "HELLO"
// Only Usage currently available
u = uppertext(u) // u = "HELLO"
l = lowertext(l) // l = "hello"
// Proposed Idea & Usage
u = uppertext(u,1,2) // u = "Hello"
l = lowertext(l,2) // l = "Hello"