diff --git a/src/header/locale/mod.rs b/src/header/locale/mod.rs
index c77facb84d..ba07c07ece 100644
--- a/src/header/locale/mod.rs
+++ b/src/header/locale/mod.rs
@@ -1,13 +1,16 @@
-//! locale implementation for Redox, following http://pubs.opengroup.org/onlinepubs/7908799/xsh/locale.h.html
+//! `locale.h` implementation.
+//!
+//! See <https://pubs.opengroup.org/onlinepubs/9799919799/basedefs/locale.h.html>.
 
 use core::ptr;
 
-use crate::platform::types::*;
+use crate::platform::types::{c_char, c_int};
 
 const EMPTY_PTR: *const c_char = "\0" as *const _ as *const c_char;
 // Can't use &str because of the mutability
 static mut C_LOCALE: [c_char; 2] = [b'C' as c_char, 0];
 
+/// See <https://pubs.opengroup.org/onlinepubs/9799919799/basedefs/locale.h.html>.
 #[repr(C)]
 pub struct lconv {
     currency_symbol: *const c_char,
@@ -54,11 +57,13 @@ static mut CURRENT_LOCALE: lconv = lconv {
     thousands_sep: EMPTY_PTR,
 };
 
+/// See <https://pubs.opengroup.org/onlinepubs/9799919799/functions/localeconv.html>.
 #[unsafe(no_mangle)]
 pub unsafe extern "C" fn localeconv() -> *mut lconv {
     &raw mut CURRENT_LOCALE as *mut _
 }
 
+/// See <https://pubs.opengroup.org/onlinepubs/9799919799/functions/setlocale.html>.
 #[unsafe(no_mangle)]
 pub unsafe extern "C" fn setlocale(_option: c_int, _val: *const c_char) -> *mut c_char {
     // TODO actually implement
diff --git a/src/header/sched/mod.rs b/src/header/sched/mod.rs
index 7dc80800db..2363edcaa0 100644
--- a/src/header/sched/mod.rs
+++ b/src/header/sched/mod.rs
@@ -1,40 +1,60 @@
-//! sched.h implementation for Redox, following https://pubs.opengroup.org/onlinepubs/7908799/xsh/sched.h.html
+//! `sched.h` implementation.
+//!
+//! See <https://pubs.opengroup.org/onlinepubs/9799919799/basedefs/sched.h.html>.
 
 use crate::{
     error::ResultExt,
     header::time::timespec,
-    platform::{Pal, Sys, types::*},
+    platform::{
+        Pal, Sys,
+        types::{c_int, pid_t},
+    },
 };
 
+/// See <https://pubs.opengroup.org/onlinepubs/9799919799/basedefs/sched.h.html>.
 #[derive(Clone, Copy, Debug)]
 pub struct sched_param {
     pub sched_priority: c_int,
 }
 
+/// See <https://pubs.opengroup.org/onlinepubs/9799919799/basedefs/sched.h.html>.
 pub const SCHED_FIFO: c_int = 0;
+/// See <https://pubs.opengroup.org/onlinepubs/9799919799/basedefs/sched.h.html>.
 pub const SCHED_RR: c_int = 1;
+/// See <https://pubs.opengroup.org/onlinepubs/9799919799/basedefs/sched.h.html>.
 pub const SCHED_OTHER: c_int = 2;
 
+/// See <https://pubs.opengroup.org/onlinepubs/9799919799/functions/sched_get_priority_max.html>.
 // #[unsafe(no_mangle)]
 pub extern "C" fn sched_get_priority_max(policy: c_int) -> c_int {
     todo!()
 }
+
+/// See <https://pubs.opengroup.org/onlinepubs/9799919799/functions/sched_get_priority_max.html>.
 // #[unsafe(no_mangle)]
 pub extern "C" fn sched_get_priority_min(policy: c_int) -> c_int {
     todo!()
 }
+
+/// See <https://pubs.opengroup.org/onlinepubs/9799919799/functions/sched_getparam.html>.
 // #[unsafe(no_mangle)]
 pub unsafe extern "C" fn sched_getparam(pid: pid_t, param: *mut sched_param) -> c_int {
     todo!()
 }
+
+/// See <https://pubs.opengroup.org/onlinepubs/9799919799/functions/sched_rr_get_interval.html>.
 // #[unsafe(no_mangle)]
 pub extern "C" fn sched_rr_get_interval(pid: pid_t, time: *const timespec) -> c_int {
     todo!()
 }
+
+/// See <https://pubs.opengroup.org/onlinepubs/9799919799/functions/sched_setparam.html>.
 // #[unsafe(no_mangle)]
 pub unsafe extern "C" fn sched_setparam(pid: pid_t, param: *const sched_param) -> c_int {
     todo!()
 }
+
+/// See <https://pubs.opengroup.org/onlinepubs/9799919799/functions/sched_setscheduler.html>.
 // #[unsafe(no_mangle)]
 pub extern "C" fn sched_setscheduler(
     pid: pid_t,
@@ -43,6 +63,8 @@ pub extern "C" fn sched_setscheduler(
 ) -> c_int {
     todo!()
 }
+
+/// See <https://pubs.opengroup.org/onlinepubs/9799919799/functions/sched_yield.html>.
 #[unsafe(no_mangle)]
 pub extern "C" fn sched_yield() -> c_int {
     Sys::sched_yield().map(|()| 0).or_minus_one_errno()