what does a "?" and "1ex" do in script editor?x = any letter

[DarkParadox]

for example when i type a ? i turns blue like this : ? that also happens when i type 1ev: 1ev.

[makslane]

Are just syntax highlighting.
The operator ? is used to make ternary condition, like this:

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x = y > 10? 20: 30;

if equal to:

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if(y > 10) x = 20;
else x = 30;

About the 1ex, I think is a bug in the syntax highlight
.

[DarkParadox]

thanks makslane:
(^_^)