Variable reference node (@name or @{name with spaces}).
Resolves to a numeric value from the evaluator's context map at
evaluation time. Names are case-sensitive (@StrMod ≠ @strmod) — the
lexer preserves case in the AT token's value, distinct from other
identifier tokens which lowercase. Leaf node — no LED, never wraps a
sub-expression.
A name missing from context throws UNDEFINED_VARIABLE unless
onMissingVariable: 'zero' is set.
Variable reference node (
@nameor@{name with spaces}).Resolves to a numeric value from the evaluator's
contextmap at evaluation time. Names are case-sensitive (@StrMod≠@strmod) — the lexer preserves case in theATtoken'svalue, distinct from other identifier tokens which lowercase. Leaf node — no LED, never wraps a sub-expression.A name missing from
contextthrowsUNDEFINED_VARIABLEunlessonMissingVariable: 'zero'is set.