It says whole command string not found.
There is a tutorial in the thread. The easy way is to just type T("text you want to type"), and it will put the text at the position under your mouse. Also, I think T("text", element #) will create it with that element. You can also use texter.TStr("the text", x, y, element #) to create text with element at position x, y. To get an element number, try tpt.element("name"), just insert the whole command in the middle of your existing command, or type that separately. Ignore what you don't understand in this post, as long as you get it to work somehow.
Ok, it accepts Texter.lua now, now how do I use it.
Also, make sure you are using this: https://powdertoy.co.uk/Discussions/Thread/View.html?Thread=14258
It should be really simple. You have to download both the script, and the font link right under it. Put them both in your tpt directory. Then type dofile("texter.lua") into the console. Maybe your problem was just that you forgot the font.
The texter scrip would be most useful to me because I could use t for instructions and such. It's better and cooler than using signs to display instructions. Plus, other elements would be useless to me because I couldn't post them.
many people also create custom elements in scripts too.
if you are using that texter script, why? I was just wondering, because there's a lot of other cool lua scripts too, and texter is a little hard to use, and only useful for saves like this.
You still haven't told me what script you are trying to use though.
Could you message this file to me, I think im on the wrong one or something.