Total loop work across an RS274NGC O-word program (DD-017 §4.5, Phase 2). Charged per loop pass and
per statement executed inside a loop body; exceeding it stops the program with a partial IR and a
rs274-iteration-limit disclosure, so a hostile o while [1] wastes only bounded CPU. Irrelevant to
FDM / non-parametric input, which never enters the interpreter.
Subroutine call-recursion depth for an RS274NGC O-word program (DD-017 §4.5, Phase 3). A
callthat would exceed this depth is disclosed (rs274-call-depth) and skipped, so unbounded recursion cannot exhaust the stack. Irrelevant to FDM / non-parametric input.