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+-------------------------------------------------------
+--! @file
+--! @brief 2:1 Mux using with-select
+-------------------------------------------------------
+
+--! Use standard library
+library ieee;
+--! Use logic elements
+    use ieee.std_logic_1164.all;
+
+--! Mux entity brief description
+
+--! Detailed description of this 
+--! mux design element.
+entity mux_using_with is
+    port (
+        din_0   : in  std_logic; --! Mux first input
+        din_1   : in  std_logic; --! Mux Second input
+        sel     : in  std_logic; --! Select input
+        mux_out : out std_logic  --! Mux output
+    );
+end entity;
+
+--! @brief Architure definition of the MUX
+--! @details More details about this mux element.
+architecture behavior of mux_using_with is
+begin
+    with (sel) select
+    mux_out <= din_0 when '0',
+               din_1 when others;
+end architecture;
+