diff --git a/examples/simple.glsl b/examples/simple.glsl
new file mode 100644
index 0000000..859c181
--- /dev/null
+++ b/examples/simple.glsl
@@ -0,0 +1,4 @@
+void mainImage(out vec4 fragColor, in vec2 fragCoord) {
+    fragColor = vec4(fragCoord / iResolution.xy, 1.0, 1.0);
+}
+
diff --git a/glonkers.1 b/glonkers.1
index 4aaf23c..11ad09f 100644
--- a/glonkers.1
+++ b/glonkers.1
@@ -1,8 +1,24 @@
 .TH glonkers 1 "February 2026" "1.0" "glonkers man page"
+
 .SH NAME
 glonkers \- Create windows and wallpapers with glsl fragment shaders.
+
 .SH SYNOPSIS
 glonkers [OPTIONS]... [FILE]
+
+.SH DESCRIPTION
+The wallpaper feature only works on wayland compositors that implement the
+wlr-layer-shell protocol.
+A simple shader file looks something like this:
+
+.EX
+void mainImage(out vec4 fragColor, in vec2 fragCoord) {
+    fragColor = vec4(fragCoord / iResolution.xy, 1.0, 1.0);
+}
+.EE
+
+The iResolution is one of the built in shader inputs.
+
 .SH OPTIONS
 
 .PP
@@ -38,7 +54,7 @@ shader with iChannel0, iChannel1, iChannel2, iChannel3.
 Stop listing outputs/textures.
 .RE
 
-.SH SHADER BUILTINS
+.SH SHADER INPUTS
 
 .PP
 \fBiTime\fR : float