Let my explain what my my script in the above post does.

It's a build tool that will use luna to create a tns file from a .lua file.
If the the lua file has a '--include file' comment, it will fetch the content of file, and place it instead of that comment.
So, you could have multiple programs like this:
--include 'libs/lib.lua'
--include 'libs/networking.lua'

function on.paint(gc)
.....

That way you don't need to  keep a copy of the library in every source file.

There is also the way you mentioned, storing your lib code in an external library document file, and using var.recall and loadstring to load it.
However, this is a complex and slow method. (Building the external library file, making sure you refresh the libs all the time, etc)

I assume that you want include 'libraries' that you make in multiple projects.
In that case, I made this: https://github.com/jimbauwens/ETK/tree/master/buildtools .
However it is important to know that this uses Luna, and not TI's SDK.

TI them self haven't created anything like this for their SDK.

Sending a TNS of a lua application that was created with tools pre [3.2] will make the calculator run it in apiLevel 1.0 automatically.
However, if you copy the source and want to recompile it with the latest luna or the SDK you will need to add  "platform.apilevel = '1.0' " (as ElementCoder mentioned) to the top of your script.
But, it is also perfectly possible that the script will run fine without adding that line.

So:
- all 3.0x, 3.1 TNS files containing Lua scripts created with Luna < v0.3 should run fine on 3.2 . It will automatically use the old API structure
- if you want to recompile, add "platform.apilevel = '1.0' " to the top of your script.

Or you could just script it so that it doesn't matter where you run it

Ah, I see your problem. D2Editors are windows of there own, the script loses focus when you select the to enter data in them.

I need to go sleep now, so I'll post a solution to this tomorrow.
Good night

Hi Goran,

This is indeed a strange issue, and it might very well be that the computer software has a bug.
Do you experience the same problem on your handheld too ?
I've tried this code on my handheld (CX CAS 3.2+), and it's working correctly:
local t = 0
function on.paint(gc)
    gc:drawString("Times that focus got lost: " .. t, 10, 10, "top")
end

function on.loseFocus()
    t=t+1
end


So, I assume that it will be a bug with the computer software. If that is the case, I will need to send a bug report to TI.
Thank you for creating a topic about this.

Also, on.construction is only called at script startup.

I've studied my share of it

Also, there are much more secrets to Nspire Lua than many people think. But it takes some effort to find them. But when you find then, you can do magicz.

I'm quickly going to answer some questions here.
1) Currently not, but this can be added if needed
2) Yes, it should be listed in the same manner as defined in the units file
3) Default values aren't integrated, but possible. However couldn't this lead to accidental wrong results ?
4) Could you explain more in detail ? I don't quite understand
5) Right now not, but this sure is a good idea !
6) Adding a different function that uses same variables should work, no need for anything special

Also, sorry for not hosting the web code yet, I've been pretty busy the last days with college starting..

It would be possible if someone spends a lot of time on the subject, something that many people in the Nspire community are missing.