The Plot3D command is used to create a 3-D plot that will be rendered inline in a shared canvas.  

It is recommended that the argument to this command be a string -- an unevaluated plot3d command. The evaluated output of a 3-D plot command will also work, but will generate a much larger structure, which, when embedded in a canvas may lead to an error when calling ShareCanvas.

$\mathrm{with}\left(\mathrm{DocumentTools}:-\mathrm{Canvas}\right)\:$

$\mathrm{cv}≔\mathrm{NewCanvas}\left(\left[''Test\; 3D-Plot''\,\mathrm{Plot3D}\left(''plot3d(x^2+y)''\right)\right]\right)$

$\mathrm{ShareCanvas}\left(\mathrm{cv}\right)$

The DocumentTools[Canvas][Plot3D] command was introduced in Maple 2022.

For more information on Maple 2022 changes, see Updates in Maple 2022.