diff --git a/components/doc.hpp b/components/doc.hpp
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index 000000000..5b4ffcdad
--- /dev/null
+++ b/components/doc.hpp
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+// Note: This is not a regular source file.
+
+/// \defgroup components Components
+
+/// \namespace ESMS
+/// \ingroup components
+/// \brief ESM/ESP record store
+
+/// \namespace ESM
+/// \ingroup components
+/// \brief ESM/ESP records
+
+/// \namespace FileFinder
+/// \ingroup components
+/// \brief Linux/Windows-path resolving
+
+/// \namespace ToUTF
+/// \ingroup components
+/// \brief Text encoding
+
+/// \namespace Compiler
+/// \ingroup components
+/// \brief script compiler
+
+/// \namespace Interpreter
+/// \ingroup components
+/// \brief script interpreter
+
+// TODO put nif and nifogre in different namespaces (or merge them)
+// TODO put other components into namespaces