Lets look at a little grammar for a simple compiler perhaps this will help.
expression -> expression + term
| expression - term
| term
statement-> id = expression
| if expression then statement
| while expression do statement
Notice that in my language grammar (taken directly out of he 'Red Dragon' Compiler Book, Aho, Sethi, Ullman). Statements always begin with either a identifier or a keyword.
$x = 1+1; <--- statement starts with an identifier x followed by an expression 1+1
</code>
mitd-Made in the Dark
'My favourite colour appears to be grey.'
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