diff --git a/sc2/src/libs/uio/doc/basics b/sc2/src/libs/uio/doc/basics
index 69f06a18f..e04afd8c6 100644
--- a/sc2/src/libs/uio/doc/basics
+++ b/sc2/src/libs/uio/doc/basics
@@ -123,18 +123,56 @@ no problem, as long as the repositories don't overlap.
 -= Internals =-
 
 Types:
-uio_MountTree - A node in a data structure describing the mounted directories.
-uio_PRoot - A struct describing the a physical file system.
-uio_PRootExtra - Filesystem-dependant extra data for a PRoot.
-uio_GPRoot - Generic filesystem-dependant data for a PRoot, used as
-            uio_PRootExtra.
-uio_GPRootExtra - Extra filesystem-dependant data for a PRoot, when using
-                 uio_GPRoot for generic filesystem-dependant data.
-uio_GPDir - Generic structure representing a node in a physical directory
-           structure describing one directory.
-uio_GPFile - Generic structure describing a file in a physical file system.
+
+uio_MountTree
+    A node in a data structure describing the mounted directories.
+
+uio_PRoot
+    A struct describing the a physical file system.
+
+uio_PRootExtra
+    Filesystem-dependant extra data for a PRoot.
+
+uio_GPRoot
+    Generic filesystem-dependant data for a PRoot, used as uio_PRootExtra.
+
+uio_GPRootExtra
+    Extra filesystem-dependant data for a PRoot, when using uio_GPRoot for
+    generic filesystem-dependant data.
+
+uio_GPDir
+    Generic structure representing a node in a physical directory structure
+    describing one directory.
+
+uio_GPFile
+    Generic structure describing a file in a physical file system.
 
 
-TODO: functions
+Helper functions (defined in ioaux.c):
+
+uio_copyFilePhysical
+    Copy a file from one physical directory to another.
+
+uio_getPathPhysicalDirs
+    Get handles to the (existing) physical dirs that are effective in a
+    path 'path' relative from 'dirHandle'
+
+uio_getPhysicalAccess
+    Find PDirHandle and MountInfo structures for reading and writing for a path
+    from a DirHandle.
+
+uio_makePath
+    Create a directory inside a physical directory. All non-existant
+    parent directories will be created as well.
+
+uio_resolvePath
+    Determine the absolute path given a path relative to a given directory.
+
+uio_verifyPath
+    Test whether a path is valid and exists.
+
+uio_walkPhysicalPath
+    Follow a path starting from a specified physical dir for as long as
+    possible.