unglue a coumpound object and replace it by individual children.
unglue(h)
H=unglue(h)
:h a handle on an Compound. : :H a vector of handle on the resulting entities after unCompound. :
Given a handle on an Compound entity, this function destroies the Compound and unpacks the elementary entities to associated them to its parent. glue returns a vector of handles on these individual children.