libk  Check-in [3e3a628048]

Modified libk.md from [f5443bdd6c] to [9f749c2fa4].

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    40     40   in the **short** convention, identifiers are prefixed by the letter `k` followed by the module's "glyph" -- a one- or two-letter sequence that represents the module, usually the first one or two characters. therefore, `kfile/open.c` is invoked as `kfopen`.
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    42     42   which naming convention a module uses should be specified at the top of its documentation. if it uses the short convention, its glyph should be specified as well
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    44     44   in both naming conventions, the following rules apply:
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    46         - 1. the possible values of enumeration types are always preceded by the name of the enumeration type and an underscore. for instance, the enum `kschain_kind` has a value named `kschain_kind_block`. **exception:** an enum named `<S>_kind`, where `<S>` is a struct type, may simply use the prefix `<S>_`.
           46  + 1. the possible values of enumeration types are always preceded by the name of the enumeration type and an underscore. for instance, the enum `ksalloc` has a value named `ksalloc_static`. **exception:** an enum named `<S>_kind`, where `<S>` is a struct type, may simply use the prefix `<S>_`.
    47     47    2. macros begin with the uppercase letter `K` -- e.g. `Kmacro`. macros that can be defined by the user to alter the behavior of the api should begin with `KF` if they are on/off flags, or `KV` otherwise.
    48     48    3. capital letters are only used in macro prefixes.
    49     49    4. low-level function names are prefixed with the API they call into. for example, the function that performs the POSIX syscall `write` is named `kio_posix_fd_write`.a wrapper around the Windows function `CreateProcess()` might be called `kproc_win_createprocess`.
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    51     51   ### atoms
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    53     53   libk uses the concept of "atoms" (small, regular strings of text) to standardize common references, such as operating systems or processor architectures.