diff --git a/README.md b/README.md
index 04ce099..1b8172a 100644
--- a/README.md
+++ b/README.md
@@ -60,8 +60,7 @@ make install
 
 Some parts of the code significantly benefit from compiler optimizations and platform features such as NEON, SSE and AVX. To enable, use `./configure CFLAGS="-O3 -march=native"` for configuration instead of `./configure`.
 
-For Windows, check out [Windows.md](doc/Windows.md) for compilation and running.
-For MacOS, see [macOS.md](doc/macOS.md).
+For Windows, MacOS and general build options, please check out [Building.md](doc/Building.md) for compilation and running.
 
 ## Running edge as a Service
 
diff --git a/doc/Windows.md b/doc/Building.md
similarity index 70%
rename from doc/Windows.md
rename to doc/Building.md
index 5edf60a..263f6d3 100644
--- a/doc/Windows.md
+++ b/doc/Building.md
@@ -1,3 +1,17 @@
+# n2n on macOS
+
+In order to use n2n on macOS, you first need to install support for TUN/TAP interfaces:
+
+```bash
+brew tap homebrew/cask
+brew cask install tuntap
+```
+
+If you are on a modern version of macOS (i.e. Catalina), the commands above will ask you to enable the TUN/TAP kernel extension in System Preferences → Security & Privacy → General.
+
+For more information refer to vendor documentation or the [Apple Technical Note](https://developer.apple.com/library/content/technotes/tn2459/_index.html).
+
+
 # Build on Windows
 
 ## Requirements
@@ -71,3 +85,12 @@ Here is an example `supernode.conf` file:
 ```
 
 See `edge.exe --help` and `supernode.exe --help` for a list of supported options.
+
+# General Building Options
+
+## Low Memory Footprint
+
+Some parts of the code (well, one for now: Pearson hashing) offer an optional low memory footprint if compiled using with the macro `LOW_MEM_FOOTPRINT`. GCC will make it happen with `-D LOW_MEM_FOOTPRINT` maybe specified along with other options of choice during configuration:
+
+`./configure CFLAGS="-O3 -march=native -D LOW_MEM_FOOTPRINT"`
+
diff --git a/doc/macOS.md b/doc/macOS.md
deleted file mode 100644
index f3c610e..0000000
--- a/doc/macOS.md
+++ /dev/null
@@ -1,12 +0,0 @@
-# n2n on macOS
-
-In order to use n2n on macOS, you first need to install support for TUN/TAP interfaces:
-
-```bash
-brew tap homebrew/cask
-brew cask install tuntap
-```
-
-If you are on a modern version of macOS (i.e. Catalina), the commands above will ask you to enable the TUN/TAP kernel extension in System Preferences → Security & Privacy → General.
-
-For more information refer to vendor documentation or the [Apple Technical Note](https://developer.apple.com/library/content/technotes/tn2459/_index.html).