//@{
InsetCode insetCode() const { return BOX_CODE; }
FuncCode creationCode() const { return LFUN_BOX_INSERT; }
//@{
InsetCode insetCode() const { return BOX_CODE; }
FuncCode creationCode() const { return LFUN_BOX_INSERT; }
/// add and remove special lengths
void setSpecial(bool ibox);
/// only show valid inner box items
/// add and remove special lengths
void setSpecial(bool ibox);
/// only show valid inner box items