diff --git a/documentation/ref-manual/ref-classes.xml b/documentation/ref-manual/ref-classes.xml
index 8a69ae0b9e..9f344a63cd 100644
--- a/documentation/ref-manual/ref-classes.xml
+++ b/documentation/ref-manual/ref-classes.xml
@@ -524,6 +524,54 @@
Any .pc file containing these paths is incorrect
since pkg-config itself adds the correct sysroot prefix
when the files are accessed.
+ textrel:
+ Checks for ELF binaries that contain relocations in their
+ .text sections, which can result in a
+ performance impact at runtime.
+ pkgvarcheck:
+ Checks through the variables
+ RDEPENDS,
+ RRECOMMENDS,
+ RSUGGESTS,
+ RCONFLICTS,
+ RPROVIDES,
+ RREPLACES,
+ FILES,
+ ALLOW_EMPTY,
+ pkg_preinst,
+ pkg_postinst,
+ pkg_prerm
+ and pkg_postrm, and reports if there are
+ variable sets that are not package-specific.
+ Using these variables without a package suffix is bad practice,
+ and might unecessarily complicate dependencies of other packages
+ within the same recipe or have other unintended consequences.
+
+ xorg-driver-abi:
+ Checks that all packages containing Xorg drivers have ABI
+ dependencies.
+ The xserver-xorg recipe provides driver
+ ABI names.
+ All drivers should depend on the ABI versions that they have
+ been built against.
+ Driver recipes that include
+ xorg-driver-input.inc
+ or xorg-driver-video.inc will
+ automatically get these versions.
+ Consequently, you should only need to explicitly add
+ dependencies to binary driver recipes.
+
+ libexec:
+ Checks if a package contains files in
+ /usr/libexec.
+ This check is not performed if the
+ libexecdir variable has been set
+ explicitly to /usr/libexec.
+
+ staticdev:
+ Checks for static library files (*.a) in
+ non-staticdev packages.
+ la:
Checks .la files for any TMPDIR
paths.