Plant SCADA Basic Questions Regarding "!" and "@"

Question

Hi, I'm a beginner of Citect SCADA/Plant SCADA (currently a Rockwell/Siemens man). 
 When learning it, I don't understand what "!" or "@" sign means in Citect SCADA. I can see the name of many pages in the sample projects start with "!", even the tutorial tells me to create and save a graphic with name "!ValveControl". Why is there a "!" sign required? What's the difference between with or without the "!"? 
 Regarding the "@" sign, I can see in the Menu Configuration of the sample projects or templates, there are a lot of "@", like @(Home), @(Alarm). I guess maybe this is for multilanguage display? I'm not sure. But in some YT videos of explaining genie or super genie, they even put text string of "@Operate" or "@Status" on where plain text "Operate" or "Status" are enough as they are completely the same in Runtime from what I can see. Why is that? 
 I tried to find the answer, but failed to find any clue anywhere.

Jacky Lang · Accepted Answer

Hi Jonathan Ma , 
 Your guess is correct that symbol @ is for multi-language. It looks for the associated local language for an English string at runtime. As for the graphics pages, the names starting with ! are normally treated as system or popup pages and they are normally hidden. But you could make them viewable on the open list by enabling "List system pages" as shown below.

Bradley · Answer

Hi Jonathan,

No not quite, have a read of this topic and sub-topics:
Configure Languages for a Standard Project

Essentially if you are not planning on supporting runtime language switching (i.e. Operators being able to view runtime pages in different languages) then you do not need to use the @(<string>) syntax.

Jonathan Ma · Answer

Thank you, Bradley!

Plant SCADA Basic Questions Regarding "!" and "@"

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