Add documentation strings

README.org

@@ -547,6 +547,7 @@ previous input in the minibuffer.
 
   ;; Adapted from ‘minibuffer-complete’:
   (defun my-minibuffer-complete-history ()
+    "Allow minibuffer completion on previous input."
     (interactive)
     (completion-in-region (minibuffer--completion-prompt-end) (point-max)
                           (symbol-value minibuffer-history-variable)
@@ -1191,6 +1192,7 @@ Python org-mode edit-buffers in ~anaconda-mode~.
     (when (and (fboundp 'my-disable-anaconda-mode)
                (fboundp 'my-enable-anaconda-mode))
       (defun my-toggle-anaconda-mode ()
+        "Toggle anaconda-mode with bells and whistles."
         (interactive)
         (if (bound-and-true-p anaconda-mode)
             (my-disable-anaconda-mode)