It's a Command so it may be entered simply as heap if it's alone on the command line.
Used mainly for debugging the engine.
i1 : ZZ/101[x,y,z];
i2 : matrix {{x,y,z}} o2 = {0} | x y z | ZZ 1 ZZ 3 o2 : Matrix (---[x,y,z]) <--- (---[x,y,z]) 101 101
i3 : heap --- heap --------- handle refcount type 0 22 Ring 1 4 Ring 2 1 MonomialOrder 3 1 MonomialOrder 4 2 Monoid 5 2 Monoid 6 6 Ring 7 1 RingElement 8 1 RingElement 9 6 Ring 10 1 RingElement 11 1 RingElement 12 1 RingElement 13 1 RingElement 14 1 RingElement 15 1 RingElement 16 6 FreeModule 17 1 Vector 18 2 Matrix 19 3 FreeModule 20 1 Vector 21 2 FreeModule 22 1 Vector 23 1 gb_comp 24 6 FreeModule 25 1 Vector 26 3 FreeModule 27 1 Vector 28 1 Matrix 29 1 MonomialOrder 30 2 Monoid 31 9 Ring 32 9 Ring 33 1 RingElement 34 1 RingElement 35 1 MonomialOrder 36 2 Monoid 37 12 Ring 38 1 RingElement 39 1 RingElement 40 1 RingElement 41 1 RingElement 42 1 RingElement 43 1 RingElement 44 1 RingElement 45 1 RingElement 46 3 FreeModule 47 1 Vector 48 1 Matrix 49 3 FreeModule 50 1 Vector Number of null entries in table = 0 Number of null objects in table = 0