diff --git a/simple-build/simple-build.sh b/simple-build/simple-build.sh
index 94b634d..6bcc9d5 100755
--- a/simple-build/simple-build.sh
+++ b/simple-build/simple-build.sh
@@ -2,19 +2,21 @@
 
 set -e
 
+# build options
 DEPS="sdl2 SDL2_mixer SDL2_image freetype2"
 CFLAGS="$CFLAGS -DNDEBUG -fPIC -O3 `pkg-config --cflags $DEPS`"
 LDFLAGS="$LDFLAGS -lm -lGL `pkg-config --libs $DEPS`"
+BUILDDIR="$PWD"
 
 
+# just helping function
 function echodo() {
     echo "$@"
     "$@"
 }
 
 
-BUILDDIR="$PWD"
-
+# compile files
 mkdir -p src
 cd ..
 for file in src/*.c src/*.S; do
@@ -22,13 +24,21 @@ for file in src/*.c src/*.S; do
 done
 cd "$BUILDDIR"
 
+
+# make static library
+echodo ar rcs libhelianthus.a src/*.o
+
+
+# make shader library
 echodo ld src/*.o $LDFLAGS -shared -o libhelianthus.so.0.1.0
 echodo ln -s libhelianthus.so.0.1.0 libhelianthus.so.0
 echodo ln -s libhelianthus.so.0.1.0 libhelianthus.so
-echodo ar rcs libhelianthus.a src/*.o
 
+
+# build demo (this ste is not required)
 echodo ln -sf ../src helianthus
 echodo ln -sf ../demo/data
 echodo cc $CFLAGS -I. -I./helianthus ../demo/src/*.c $LDFLAGS "$BUILDDIR/libhelianthus.so" -o demo
 
+
 echo "done"
\ No newline at end of file
diff --git a/simple-build/simple-install.sh b/simple-build/simple-install.sh
index 1a0a1b1..90f757c 100755
--- a/simple-build/simple-install.sh
+++ b/simple-build/simple-install.sh
@@ -3,31 +3,33 @@
 set -e
 
 
+# just helping function
 function echodo() {
     echo "$@"
     "$@"
 }
 
 
+# take prefix from argument, environment or default (/usr/local)
 if [ ! -z "$1" ]; then
     PREFIX="$1"
 fi
-
 if [ -z "$PREFIX" ]; then
     PREFIX="/usr/local"
 fi
-
 echo "install to: $PREFIX"
 
+
+# make install dir and determine its absolute path
 BUILDDIR="$PWD"
 echodo mkdir -p "$PREFIX"
 cd "$PREFIX"
 PREFIX="$PWD"
 cd "$BUILDDIR"
-
 echo "full path: $PREFIX"
 
 
+# install headers
 cd ../src
 echodo mkdir -p "$PREFIX/include/helianthus/helianthus"
 echodo cp animation.h colors.h common.h drawing.h font.h framebuffer.h \
@@ -37,10 +39,13 @@ echodo cp helianthus.h helianthus-nk.h \
           "$PREFIX/include/helianthus/"
 cd "$BUILDDIR"
 
+
+# install libs and pkgconfig file
 echodo mkdir -p "$PREFIX/lib/pkgconfig"
 echodo cp libhelianthus.a libhelianthus.so libhelianthus.so.0 libhelianthus.so.0.1.0 \
           "$PREFIX/lib/"
 echo echo "prefix=$PREFIX" \| cat - helianthus.pc.in > "$PREFIX/lib/pkgconfig/helianthus.pc"
      echo "prefix=$PREFIX"  | cat - helianthus.pc.in > "$PREFIX/lib/pkgconfig/helianthus.pc"
 
+
 echo "done"
\ No newline at end of file