diff --git a/doc/README.md b/doc/README.md
index cfe7fbb..cefe87d 100644
--- a/doc/README.md
+++ b/doc/README.md
@@ -2,8 +2,8 @@
 Intercepting and Manipulating Function and System Calls in Linux
 ================================================================
 
-Option 1: Preloading (`LD_PRELOAD`)
------------------------------------
+Option 1: Preloading (`LD_PRELOAD`) {#preloading}
+-------------------------------------------------
 
 From the [ENVIRONMENT section in the Linux manual page ld.so(8)](https://www.man7.org/linux/man-pages/man8/ld.so.8.html#ENVIRONMENT):
 
@@ -44,8 +44,8 @@ LD_PRELOAD="$(pwd)/preload.so" ./main
 ```
 
 
-Option 2: Wrapper functions (`gcc -Wl,--wrap=`, `ld --wrap=`)
--------------------------------------------------------------
+Option 2: Wrapper functions (`gcc -Wl,--wrap=`, `ld --wrap=`) {#wrapper-functions}
+----------------------------------------------------------------------------------
 
 From the [OPTIONS section in the Linux manual page ld(1)](https://www.man7.org/linux/man-pages/man1/ld.1.html#OPTIONS):
 
@@ -96,8 +96,8 @@ gcc -o main_wrapped main.c wrap.c -Wl,--wrap=malloc
 ```
 
 
-Option 3: Kernel module
------------------------
+Option 3: Kernel module {#kernel-module}
+----------------------------------------
 
 * Only works with Linux system calls
 * Also works with statically linked executables