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__    __    ______   __   __    ______   ______   
\ \\ / //  /_   _//  \ \\/ //  /_   _// |      \\ 
 \ \/ //    -| ||-    \   //    -| ||-  |  --  // 
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   \//     /_____//  /_//\_\\  /_____// |______// 
    `      `-----`   `-`  --`  `-----`  `------`

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Text this: On semigroups of endomorphisms of a chain with restricted range