Code vs. Strings

Description:

Many languague constructs (including forEach, if, while) use the concept of "code strings".
Code is passed as a string to them and they interpret it as code if they wish.
Since version 1.85, string constants can be written in two ways:

Using double quotes (like "Hello") or curled braces (like {a=a+1}).

While both ways are currently equivalent and the string constant is created, we recommend the use of curled braces for code only, as this makes scripts easier to read - moreover future versions of scripting language may precompile code enclosed in curled braces.