Added public files

Roughly added all public files. Probably missed some, though.
diff --git a/doc/efun/m_indices b/doc/efun/m_indices
new file mode 100644
index 0000000..4d84c4e
--- /dev/null
+++ b/doc/efun/m_indices
@@ -0,0 +1,9 @@
+SYNOPSIS:
+	mixed *m_indices(mapping map)
+
+DESCRIPTION:
+	Return an array containing the indices of mapping 'map'.
+
+SEE ALSO:
+	mappingp(E), mkmapping(E), m_values(E), m_delete(E),
+	sizeof(E), widthof(E)