std::experimental::ranges::IndirectStrictWeakOrder
From cppreference.com
                    
                                        
                    < cpp | experimental | ranges
                    
                                                            
                    | Defined in header  <experimental/ranges/iterator> | ||
| template <class F, class I1, class I2 = I1> concept bool IndirectStrictWeakOrder() { | (ranges TS) | |
| This section is incomplete Reason: add description and extra caveats |