What is the "tries-tree"? (ie `ncurses/tinfo/add_tries.c`) 

### Directory Structure

#### ncurses/tinfo/*
**`access.c`** -> functions for working with file/paths (ie basename, or opening and reading files)
**`add_tres.c`** -> single function (add keycode/string to "tries-tree")

**`lib_kernel.c`**   -> pseudo-"termios wrapper"
**`lib_baudrate.c`** -> extension of `lib_kernel.c` for baudrate