"from" question

[ken gray]

in the help it says

Tips
To append other string to the end or beginning of s, use + or - operator.

Example
str s = "notepad"
str ss.from(s ".exe")
now ss is "notepad.exe"

but i dont know where to put the +or -. where do i place them?
thanks...

[Gintaras]

Examples

Code:

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str s = "notepad"
str ss.from(s ".exe")
;now ss is "notepad.exe"

;The same with +:
ss=s
ss+".exe"