diff --git a/src/awesomewm.d.tl/property.tl b/src/awesomewm.d.tl/property.tl
index bcbc8c5..2d7c01d 100644
--- a/src/awesomewm.d.tl/property.tl
+++ b/src/awesomewm.d.tl/property.tl
@@ -4,6 +4,12 @@ local record Property
 
    out_directory: string
 
+   --- Pages with modules from the C API.
+   -- These pages contains definitions for both, the global C API and the
+   -- `awful` library. We have to manage them separately, because the global C
+   -- API should be part of the global_en_def.
+   capi_modules: { string }
+
    --- Pages from the navigation menu to ignore.
    -- Sets to ignore documentations and sample file. I also added libraries with
    -- low quality API documentation, I'll probably work on them later, lets start
@@ -16,6 +22,12 @@ local property: Property = {
    base_url = "file:///usr/share/doc/awesome/doc",
    index_uri = "/index.html",
    out_directory = "generated",
+   capi_modules = {
+      "awesome",
+      "client and awful.client",
+      "screen and awful.screen",
+      "tag and awful.tag",
+   },
    ignored_modules = {
       -- Sample files
       "rc.lua",