Diagnostic families

Range	Phase	Meaning
GPC10xx	lexer warnings	token recognized with a recoverable issue
GPC11xx	lexer errors	invalid/unterminated token or out-of-range literal
GPC2xxx	parser errors	grammar, delimiter, or required-form failure
GPC30xx	semantic warnings	valid source with suspicious/dead/suboptimal meaning
GPC40xx	semantic errors	invalid name, scope, array, flow, or declaration meaning
GPC51xx	compiler errors	code generation, argument, limit, or internal failure
GPC60xx	extended warnings	suspicious calculations, unused items, stack risk, or data width
GPC9xxx	function-specific	targeted API warnings

The catalog contains a few target-specific messages for non-Live modes because they exist in the compiler's diagnostic universe. This book's working target remains Zen Studio Live 32-bit.