Integrate eros for better display of evaluation

Now when I evaluate an s-expression, I get a message near the code
instead of down below.

README.org

@@ -32,6 +32,7 @@ This creates [[file:~/.emacs.d/init.el][~/.emacs.d/init.el]] that starts the pro
   - [[file:ha-irc.org][irc]] :: connection to IRC servers using rcirc and bitlbee.
   - [[file:ha-passwords.org][passwords]] :: code for generating passwords.
   - [[file:ha-programming.org][programming]] :: configuration for /all/ programming languages, or at least, the simple ones.
+  - [[file:ha-programming-elisp.org][programming-elisp]] :: additions to Emacs Lisp programming.
   - [[file:ha-programming-python.org][programming-python]] :: configuration for working with Python and LSP.
   - [[file:ha-programming-scheme.org][programming-scheme]] :: configuration for Racket.
   - [[file:ha-aux-apps.org][aux-apps]] :: additional application configuration.

ha-programming-elisp.org

@@ -169,6 +169,12 @@ Other nifty keybindings that I need to commit to muscle memory include:
 | ~M-r~ | =sp-raise-sexp=     |
 
 ** Eval Current Expression
+The [[https://github.com/xiongtx/eros][eros]] package stands for Evaluation Result OverlayS for Emacs Lisp, and basically shows what each s-expression is near the cursor position instead of in the mini-buffer at the bottom of the window.
+#+BEGIN_SRC emacs-lisp
+  (use-package eros
+    :hook (emacs-lisp-mode . eros-mode))
+#+END_SRC
+
 A feature I enjoyed from Spacemacs is the ability to evaluate the s-expression currently containing the point. Not sure how they made it, but [[help:evil-cp-next-closing ][evil-cp-next-closing]] from cleverparens can help:
 
 #+BEGIN_SRC emacs-lisp

ha-programming-scheme.org

@@ -83,10 +83,6 @@ Let’s test it out by defining a variable:
 And simply using it:
 #+BEGIN_SRC scheme :var b=8
   (+ a b)
-
-
-  
-
 #+END_SRC
 
 #+RESULTS:
@@ -106,14 +102,9 @@ Let’s get the book available as an Info page:
 (use-package sicp)
 #+END_SRC
 
-And does this work?
-#+BEGIN_SRC scheme
-  (inc 42)
-#+END_SRC
-
 Still having difficulty getting the Scheme REPL to output the results back into this document. Let’s try Racket...
 
-If we want to read the [[file:~/.emacs.d/straight/build/sicp/sicp.info][sicp.info]] file, looks like we need this, at least, temporarily:
+Normally, I would just [[info:SICP][read the book]], however, if we want to read the [[file:~/.emacs.d/straight/build/sicp/sicp.info][sicp.info]] file, we need this, at least, temporarily:
 #+BEGIN_SRC emacs-lisp
 (add-to-list 'auto-mode-alist '("\\.info\\'" . Info-mode))
 #+END_SRC