diff --git a/bin/nuxfs b/bin/nuxfs
index afc265f..9538338 100755
--- a/bin/nuxfs
+++ b/bin/nuxfs
@@ -13,6 +13,7 @@ nux.use nuxfs
 
 GIT_BIN=$(which git)
 
+##  check - Verifies that directory matches nuxfs specification
 task.check() {
   nuxfs.dsl.process "$@";
 }
@@ -36,7 +37,8 @@ nuxfs.dsl.process() {
 		TARGET=$(pwd);
 	fi;
 
-	nux.log debug Target: $TARGET
+  TARGET=$(realpath -Lms "$TARGET")
+  nux.log debug Target: $TARGET
 
 	NUXFS_DEF=$(nuxfs.closest $SUFFIX "$TARGET");
 #
diff --git a/inc/dsl/nuxfs.apply.dsl b/inc/dsl/nuxfs.apply.dsl
index bb127a5..851ab8a 100644
--- a/inc/dsl/nuxfs.apply.dsl
+++ b/inc/dsl/nuxfs.apply.dsl
@@ -6,8 +6,8 @@ dir.check.recover() {
 }
 link.check.recover() {
   nuxfs.info "$rel_path" "Creating link to '$3'";
-  ln -s "$3" "$abs_path"
+  ln -s "$target" "$abs_path"
 }
 git.check.recover() {
-  $GIT_BIN clone "$3" "$abs_path"
+  $GIT_BIN clone "$origin" "$abs_path"
 }
diff --git a/inc/dsl/nuxfs.check.dsl b/inc/dsl/nuxfs.check.dsl
index 4e6920c..bcb2cc3 100644
--- a/inc/dsl/nuxfs.check.dsl
+++ b/inc/dsl/nuxfs.check.dsl
@@ -7,21 +7,20 @@ link.entered() {
     return
   fi
   local REAL_LINK=$(readlink "$abs_path")
-  local TARGET="$3";
-  nux.log trace "Target is: $TARGET, real link: $REAL_LINK"
-  if test ! "$REAL_LINK" = "$TARGET"; then
+  nux.log trace "Target is: $target, real link: $REAL_LINK"
+  if test ! "$REAL_LINK" = "$target"; then
     MAT_REAL=$(realpath "$REAL_LINK")
     local cdir=$(dirname "$abs_path")
-    MAT_TARGET=$(realpath "$cdir/$TARGET")
+    MAT_TARGET=$(realpath "$cdir/$target")
     if test "$MAT_REAL" = "$MAT_TARGET"; then
       nuxfs.warning "$rel_path" "is using different definition for target '$3'"
     else
-      nuxfs.error "$rel_path" "links to $REAL_LINK instead of $TARGET"
+      nuxfs.error "$rel_path" "links to $REAL_LINK instead of $target"
       return
     fi
   fi
   if test ! -e "$abs_path"; then
-    nuxfs.warning "$rel_path" "target '$NC_White$TARGET$NC_No' does not exists."
+    nuxfs.warning "$rel_path" "target '$NC_White$target$NC_No' does not exists."
   fi
 }
 
@@ -31,9 +30,9 @@ git.entered() {
     nuxfs.error "$rel_path" "is not git repository"
     return
   fi
-  local remotes=$(grep "$3" "$rel_path/.git/config" | wc -l)
+  local remotes=$(grep "$origin" "$rel_path/.git/config" | wc -l)
   if [ $remotes -eq 0 ]; then
-    nuxfs.error "$rel_path" "Does not refer git remote '$3'"
+    nuxfs.error "$rel_path" "Does not refer git remote '$origin'"
     return;
   fi
 }
diff --git a/inc/dsl/nuxfs.dsl b/inc/dsl/nuxfs.dsl
index 5344de9..a0efb6a 100644
--- a/inc/dsl/nuxfs.dsl
+++ b/inc/dsl/nuxfs.dsl
@@ -1,3 +1,5 @@
+#/bin/sh
+
 .block dir name
 .keyword link name target
 .keyword git name origin
@@ -5,6 +7,7 @@
 .keyword name name
 .keyword template
 .keyword exists
+.keyword should-not-exists
 
 directory() {
   dir
@@ -25,8 +28,22 @@ sdir() {
   nux.check.file.exists "$abs_path"
 }
 
+should-not-exists.check() {
+  nux.log trace "Checking existence of $NC_White$abs_path$NC_No"
+  if nux.check.file.exists "$abs_path"; then
+    return 1
+  fi
+  return 0
+}
+
+should-not-exists.check.failed() {
+  for f in "$rel_path"; do
+    nux.dsl.error $f Should not exists, but is present.
+  done
+}
+
 .check.failed() {
-  nux.dsl.error "$abs_path" does not exists.
+  nux.dsl.error "$rel_path" does not exists.
 }
 dir.entered() {
   if nux.check.file.exists "$abs_path/.nuxfs"; then
diff --git a/inc/nux-base.inc.sh b/inc/nux-base.inc.sh
index 0dddf52..a25e8ba 100644
--- a/inc/nux-base.inc.sh
+++ b/inc/nux-base.inc.sh
@@ -69,3 +69,8 @@ function nux.check.function {
 function nux.check.file.exists {
 	test -e "$1" -o -h "$1";
 }
+
+function nux.eval {
+  nux.log trace Going to evaluate "$@"
+  eval "$@"
+}
diff --git a/inc/nux.dsl.inc.sh b/inc/nux.dsl.inc.sh
index e56130a..2ff8348 100644
--- a/inc/nux.dsl.inc.sh
+++ b/inc/nux.dsl.inc.sh
@@ -26,14 +26,12 @@ function nux.dsl.block.push {
   local btype="$1"
   local value="$2"
   local parent=$(nux.dsl.block.path)
-  nux.log trace "Pushing $NC_White$btype '$value'$NC_No on stack."
+  #nux.log trace "Pushing $NC_White$btype '$value'$NC_No on stack."
   DSL_BLOCK_TYPE[${#DSL_BLOCK_TYPE[@]}]="$btype"
   DSL_BLOCK_ID[${#DSL_BLOCK_ID[@]}]="$value"
   DSL_BLOCK_PATH[${#DSL_BLOCK_PATH[@]}]="$parent/$value";
 }
 
-
-
 function nux.dsl.error {
   local tag="$1"; shift;
 	nux.echo.error "$tag"$NC_No: $*;
@@ -41,12 +39,12 @@ function nux.dsl.error {
 
 function nux.dsl.warning {
   local tag="$1"; shift;
-	nux.echo.warning "$1"$NC_No: $*;
+	nux.echo.warning "$tag"$NC_No: $*;
 }
 
 function nux.dsl.info {
   local tag="$1"; shift;
-	echo -e $NC_White"$1"$NC_No:  $*;
+	echo -e $NC_White"$tag"$NC_No:  $*;
 }
 
 function nux.dsl.keyword.exec {
@@ -54,15 +52,21 @@ function nux.dsl.keyword.exec {
   local keyword="$2";
   local FUNC_NAME=$keyword$func;
 	local DEFAULT_NAME=$func;
+  local ALLWAYS_NAME=.allways$func;
+
 	shift; shift;
+  if nux.check.function $ALLWAYS_NAME; then
+		nux.log trace  Executing: $NC_White$ALLWAYS_NAME$NC_No "$@";
+		$ALLWAYS_NAME "$@";
+  fi
   if nux.check.function $FUNC_NAME; then
 		nux.log trace  Executing: $NC_White$FUNC_NAME$NC_No "$@";
 		$FUNC_NAME "$@";
-		return;
+		return $?;
 	elif nux.check.function $DEFAULT_NAME; then
 		nux.log trace  Executing: $NC_White$DEFAULT_NAME$NC_No "$@";
 		$DEFAULT_NAME "$@";
-		return;
+		return $?;
 	fi
 }
 
@@ -77,7 +81,7 @@ function nux.dsl.block.start {
   id="$2";
   path="$parent/$id";
 
-  #nux.log trace Starting Block: "$keyword" ID: "$id" Parent: $parent
+  nux.log trace Starting Block: "$keyword" ID: "$id" Parent: $parent
   #nux.log debug "Skip is: $nux_dsl_skip, test should return $(test -z "$nux_dsl_skip")"
   nux.dsl.block.push "$keyword" "$id"
   if [[ $path == $nux_dsl_only_subtree* && -z "$nux_dsl_skip" ]]; then
@@ -102,21 +106,32 @@ function nux.dsl.block.end {
   id=$(nux.dsl.block.id)
   path=$(nux.dsl.block.path)
 
-  nux.log trace Ending block $NC_White"$keyword" "'$id'"
+  #nux.log trace Ending block $NC_White"$keyword" "'$id'"
+  nux.dsl.block.pop "$1"
+
   if [ "$path" = "$nux_dsl_skip" ];then
     nux_dsl_skip="";
   fi
-  nux.dsl.block.pop "$1"
   if [[ $path == $nux_dsl_only_subtree* ]]; then
     nux.dsl.keyword.exec .exited "$keyword" "'$id'"
-
-    nux.log trace Ending block $NC_White"$keyword" "'$id'"
   fi
 }
 
-function nux.dsl.load {
+function nux.dsl.execute {
   local language=$1
   local script=$2
+  local language_dir=$(dirname "$language");
+  local script_dir=$(dirname "$script");
+  function .use-dsl {
+    if nux.check.file.exists "$language_dir/$1.dsl"; then
+      source "$language_dir/$1.dsl";
+    elif nux.check.file.exists "$script_dir/$1.dsl"; then
+      source "$script_dir/$1.dsl";
+    else
+      nux.dsl.error $1 Language not found in $NC_White$language_dir$NC_No and $NC_White$script_dir$NC_No
+      exit 1;
+    fi
+  }
 
   function .entered {
     nux.log debug Keyword $NC_White$1$NC_No is noop.
@@ -129,13 +144,28 @@ function nux.dsl.load {
     return 1
   }
 
+  function .arg.parser {
+    keyword="$1"; shift;
+    offset=1;
+    echo """# Parsing arguments
+
+        keyword=$keyword
+        id=\"\$1\""""
+    for var in "$@"; do
+      echo "        ${var}=\"\$$offset\""
+      let offset=$offset+1
+    done
+  }
+
+
   function .block {
     local keyword="$1"
-    nux.log trace Defining block named $NCWhite"$keyword"
+    nux.log trace Defining block keyword $NC_White"$keyword"
     #FIXME: Add aliasing of binary of same name.
-    eval """
+    nux.eval """
       $keyword() {
-        nux.dsl.block.start $keyword "\$@";
+        $(.arg.parser "$@")
+        nux.dsl.block.start $keyword \"\$@\";
       }
       end$keyword() {
         nux.dsl.block.end $keyword
@@ -146,14 +176,37 @@ function nux.dsl.load {
   function .keyword {
     local keyword="$1"
     #FIXME: Add aliasing of binary of same name.
-    nux.log trace Defining block named $NCWhite"$keyword"
-    eval """
+    nux.log trace Defining keyword $NC_White"$keyword"
+    nux.eval """
       $keyword() {
-        nux.dsl.block.start $keyword "\$@";
+        $(.arg.parser "$@")
+        nux.dsl.block.start $keyword \"\$@\";
         nux.dsl.block.end $keyword;
       }
     """
   }
+
+  .keyword.virtual() {
+    local keyword=$1
+    .keyword "$@"
+    nux.eval """
+      ${keyword}.check() {
+        return 0;
+    }
+    """
+  }
+
+  .block.virtual() {
+    local keyword=$1
+    .block "$@"
+    nux.eval """
+      ${keyword}.check() {
+        return 0;
+    }
+    """
+  }
+
   nux.dsl.block.init
-  $language
+  source "$language.dsl"
+  source "$script"
 }