diff --git a/wiki/unix/alpine.m4 b/wiki/unix/alpine.m4
index 1c0d7bc..58cbec8 100644
--- a/wiki/unix/alpine.m4
+++ b/wiki/unix/alpine.m4
@@ -6,12 +6,20 @@ Its main purpose is to serve as a server distribution, however many have found u
 _bibliography(`
 _bentr(`<A HREF="https://pkgs.alpinelinux.org/contents">Alpine repositories content search</A>')
 ')
-<H5>Bootstrapping</H5>
+_subheader(`_code(`WARNING: Ignoring [_italic(`path')]: UNTRUSTED signature')')
+_bibliography(`
+_bentr(_link(`ERROR: http://dl-4.alpinelinux.org/alpine/edge/testing: UNTRUSTED signature', `https://stackoverflow.com/questions/73374745/error-http-dl-4-alpinelinux-org-alpine-edge-testing-untrusted-signature')')
+')
+<P>
+If you are absolutely sure what you're doing is fine, _command(`apk [_italic(`command')] _em(`--allow-untrusted')').
+This ignores the error and allows the operation to proceed.
+</P>
+_subheader(`Bootstrapping')
 <P>
 Alpine's bootstrapping procedure is quite manual; you should probably use _program(`setup-alpine').
 However, it is possible and quite easy to perform the steps manually.
 </P>
-<UL>
+<OL>
 <LI>Copy over the contents of _file(`/etc/apk/keys') to _file(`/mnt/etc/apk/keys')</LI>
 <LI>
 Add newline-delimited mirrors to _file(`/mnt/etc/apk/repositories'), such as these if you wish to use the _code(`edge') branch:
@@ -26,7 +34,7 @@ _code(`edge') may be replaced with a stable branch, the latest being _code(`v3.1
 Run _command(`apk --root /mnt add --initdb alpine-base').
 This is an ordinary _man(`apk-add(8)') call; you may wish to install necessities such as a kernel, firmware, and a bootloader at the same time.
 </LI>
-</UL>
+</OL>
 <P>
 Alpine does not have a _man(`chroot(1)') helper; you must manually do that with a one-liner such as
 _code(`for i in dev proc sys; do mount -o bind "/$i" "/mnt/$i"; done; cp /etc/resolv.conf /mnt/etc/resolv.conf')
@@ -35,7 +43,8 @@ which you can chroot into.
 <P>
 After chrooting in, you must configure basics such as users, passwords, _man(`fstab(5)'), and the bootloader yourself.
 </P>
-<H5>Always install manual pages</H5>
+
+_subheader(`Always install manual pages')
 <P>
 Alpine doesn't include man pages in program packages to save on space, instead keeping them in _code(`[<I>package</I>]-doc') sibling packages.
 To always install doc packages with program packages, _code(`apk add docs').
diff --git a/wiki/wiki.m4 b/wiki/wiki.m4
index 46fd3e2..30344dd 100644
--- a/wiki/wiki.m4
+++ b/wiki/wiki.m4
@@ -6,6 +6,7 @@ define(`_bibliography_entry', `<LI>$1</LI>')dnl
 define(`_bentr', `_bibliography_entry($1)')dnl
 define(`_cite', `<CITE>$1</CITE>')dnl
 define(`_code', `<CODE>$1</CODE>')dnl
+define(`_em', `<EM>$1</EM>')dnl
 define(`_header', `define(`_CURRENT_HEADER', $1)<H2 ID="_lowercase($1)">$1</H2>')dnl
 define(`_italic', `<I>$1</I>')dnl
 define(`_link', `<A HREF="$2">$1</A>')dnl