This command is a simple frontend to the global indets command. It still returns all the indeterminant subexpressions of the input of the given type but it removes the names of units and the unit data structures from the output.

$\mathrm{with}\left(\mathrm{Units}\right)\:$

Automatically loading the Units[Simple] subpackage

$\mathrm{expr}≔{\left(x-30\mathrm{Unit}\left('\mathrm{fathom}'\right)\right)}^2+\mathrm{Unit}\left({'m'}^2\right)+m^2$

$\mathrm{expr}≔{\left(-30⟦\mathrm{fathom}⟧+x\right)}^2+⟦m^2⟧+m^2$

$:-\mathrm{indets}\left(\mathrm{expr}\right)$

$\left\{\mathrm{fathom}\,m\,m\,x\,⟦\mathrm{fathom}⟧\,⟦m^2⟧\right\}$

$\mathrm{Indets}\left(\mathrm{expr}\right)$

$\left\{m\,x\right\}$

The Units[Indets] command was introduced in Maple 2018.

For more information on Maple 2018 changes, see Updates in Maple 2018.