diff --git a/demo_basic/path/PLIB.php b/demo_basic/path/PLIB.php
new file mode 100644
index 0000000..5dbda34
--- /dev/null
+++ b/demo_basic/path/PLIB.php
@@ -0,0 +1,5 @@
+<?php
+class PLIB extends \SYSTEM\PATH {
+    public function __construct($subpath = '') {
+        parent::__construct(new \SYSTEM\PROOT(), 'lib/', $subpath);}
+}
diff --git a/demo_basic/path/PPAGE.php b/demo_basic/path/PPAGE.php
new file mode 100644
index 0000000..66093cf
--- /dev/null
+++ b/demo_basic/path/PPAGE.php
@@ -0,0 +1,5 @@
+<?php
+class PPAGE extends \SYSTEM\PATH {
+    public function __construct($subpath = '') {
+        parent::__construct(new \SYSTEM\PROOT(), 'basic_demo/page/', $subpath);}
+}
diff --git a/demo_basic/path/PSAI.php b/demo_basic/path/PSAI.php
new file mode 100644
index 0000000..cb858b3
--- /dev/null
+++ b/demo_basic/path/PSAI.php
@@ -0,0 +1,5 @@
+<?php
+class PSAI extends \SYSTEM\PATH {
+    public function __construct($subpath = '') {
+        parent::__construct(new \SYSTEM\PROOT(), 'basic_demo/sai/', $subpath);}
+}
diff --git a/demo_basic/path/PSQL.php b/demo_basic/path/PSQL.php
new file mode 100644
index 0000000..3d05ee3
--- /dev/null
+++ b/demo_basic/path/PSQL.php
@@ -0,0 +1,5 @@
+<?php
+class PSQL extends \SYSTEM\PATH {
+    public function __construct($subpath = '') {
+        parent::__construct(new \SYSTEM\PROOT(), 'basic_demo/sql/', $subpath);}
+}
\ No newline at end of file