The two functions referenced, `__umodhi3` and `__udivhi3` are part of `libgcc`.
The names reference the **u**nsigned **mod**ulo or **div**ision on
-**h**alf-**i**teger types. Per the [GCC
+**h**alf-**i**nteger types. Per the [GCC
manual](https://gcc.gnu.org/onlinedocs/gccint/Machine-Modes.html#Machine-Modes),
the half-integer mode uses a two-byte integer.
functional, though catching all the edge cases could be challenging.
-## uint32 ##
+## Using uint32 ##
Although the PDP-11 utilizes a 16-bit word, GCC is clever enough to allow
operations on 32-bit words by breaking them up into smaller operations. For