How do I plot an inequality containing absolute values? Is it possible to plot $|x|+|y|<=1$ directly in maple? I have looked at `inequal()` but can't find any examples with absolute values and can't get it to work.

plots:-inequal(abs(x)+abs(y)<=1,x=-2..2,y=-2..2);


![enter image description here](


plots:-implicitplot(abs(x)+abs(y)<=1,x=-2..2,y=-2..2,
gridrefine=1,filledregions,
view=[-2..2,-2..2]);


![enter image description here](