.ram : { *(.ram_code) } > RAM AT > ROM could you explain the grammar in this segment?

This segment is a memory layout specification for the linker in a C or C++ project. It defines a section named `.ram` that contains code from the section named `.ram_code`. The `>` operator specifies where this section should be placed in memory. In this case, it is placed in the RAM memory area, which is typically separate from the read-only memory (ROM) area. The `AT` keyword is used to specify the starting address of the section in memory. In this case, it is specified to be the same as the ROM area. This means that the code in this section will be loaded into RAM at the same address as it is stored in ROM.