- stack_depth(?Level) is semidet
- Stack Depth.
- stack_check is semidet
- Stack Check.
- stack_check(?BreakIfOver) is semidet
- Stack Check.
- stack_check(?BreakIfOver, ?Error) is semidet
- Stack Check.
- stack_check_else(?BreakIfOver, ?Call) is semidet
- Stack Check Else.
- in_pengines is semidet
- In Pengines.
- relative_frame(?Attrib, ?Term, ?Nth) is semidet
- Relative Frame.
- parent_goal(?Goal, ?Nth) is semidet
- Parent Goal.
- find_parent_frame_attribute(?Attrib, ?Term, ?Nth, ?RealNth, ?FrameNum) is semidet
- Find Parent Frame Attribute.
- prolog_frame_match(?Frame, :TermAttrib, :TermTerm) is semidet
- Prolog Frame Match.
- current_frames(?Frame, ?Attrib, :GoalN, ?NextList) is semidet
- Current Frames.
- current_next_frames(?Attrib, ?Nth, ?Frame, ?NextList) is semidet
- Current Next Frames.