hdelete - Manual do Geomview
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#### 7.2.53 hdelete

`(hdelete [geometry|camera|window|appearance|image|transform|ntransform] name)`
  Deletes the given handle. Note that the handle will not actually be deleted in case there are still other objetos referring to the handle, but once those objetos are gone, the handle will also automatically go away. The objeto the handle referes to (if any) will only be deleted if there are no other references to that objeto.

  If the optional first argument is omitted, then the first handle matching name will be deleted, regardless of the type of the objeto it is attached to. It is not an error to call this function with a non-existent handle, but it is an error to call this funcion with the name of a non-global handle, i.e. one that was not created by `(hdefine ...)` or `(read ... { define ...})`. See References. See `(read ...)`. See `(hdefine ...)`.