Add todos [ci skip]
@@ -578,7 +578,12 @@ def MyCustomVectors(
## Pretraining {#pretraining}
-<!-- TODO: write -->
+- explain general concept and idea (short!)
+- present it as a separate lightweight mechanism for pretraining the tok2vec
+ layer
+- advantages (could also be pros/cons table)
+- explain how it generates a separate file (!) and how it depends on the same
+ vectors
> #### Raw text format
>
