The ClearGroup command removes the math and text contents of the active canvas group, leaving the group intact with a single empty math container inside.  Designate which group to clear by using the SetActive command prior to calling ClearGroup.

A "canvas" is an interactive section of a Maple document created by the NewCanvas command, or a shared web-based Maple Learn document.  See the Script command for a more complete description.

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

ClearGroup := proc(canvas)
   local sc := Script();
   SetActive(sc,"G");
   ClearGroup(sc);
   SetText(sc,"insert after clear");
   ToString(sc);
end proc:

$\mathrm{cv}≔\mathrm{NewCanvas}\left(\left[''Test\; ClearGroup''\,\mathrm{Group}\left(\left[\mathrm{Text}\left(''text''\,\mathrm{custom}=''T''\right)\,1\,2\,3\right]\,\mathrm{custom}=''G''\right)\,\mathrm{ScriptButton}\left(''Clear\; Group''\,\mathrm{ClearGroup}\,\mathrm{position}=\left[500\,60\right]\right)\right]\right)\:$

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

The DocumentTools:-Canvas:-Script:-ClearGroup command was introduced in Maple 2023.

For more information on Maple 2023 changes, see Updates in Maple 2023.