ETB what it is ?

[mLipok]

In SciTE when I press CTRL+SHIFT+W then there is inserted a scpecial sign "ETB" 
What it is ?

I want also to ask whether this feature is used / useful ?
I ask because I want to change the keyboard shortcut (in my own config)

Edited December 21, 2016 by mLipok

[Tekk]

End-of-Transmission-Block character

[mLipok]

So now the only question is: Is it used by any member in au3 scirpts ?
But as I think this can be handy only in very specific situation , but even in that case better solution would be to use:
 

Chr(4)

?

EDIT: Unless someone has to some special usage ?

Edited December 21, 2016 by mLipok

[mLipok]

There are also other chars.

For example to the following snippet manually Add each of showed combination

#include-once
#include <Array.au3>

#cs
    CTRL+SHIFT+W 
    CTRL+SHIFT+Y 
    CTRL+SHIFT+A 
    CTRL+SHIFT+G 
    CTRL+SHIFT+H 
    CTRL+SHIFT+Z 
    CTRL+SHIFT+X 
    CTRL+SHIFT+C 
    CTRL+SHIFT+N 

#CE

#include <ie.au3>

 

And now try to use CTRL+F5 (Au3check) then you will see:

  Quote

warning: #comments-start has no explicit closing #comments-end (1 level).

Expand  

EDIT:
I think about turn these characters off from the use in SciTE, so I think about adding them fake keyboard shortcuts.

Edited December 21, 2016 by mLipok

[jchd]

Ctrl + letter by default maps to the corresponding ANSI control character and this behavior isn't special to SciTE, unless a specific such hotkey is declared.