diff --git a/README.md b/README.md
index 6c95f73..39f35bf 100644
--- a/README.md
+++ b/README.md
@@ -1,2 +1,63 @@
-# basic_case-parameterized
-Openscad parameterized basic case
+# Basic parameterized case
+Simple parameterized case for openscad
+
+**Example**
+
+``` 
+// Render options
+case_part        = "case_all";
+render_mode      = "normal";
+
+// Board values
+dim_board        = [60,30,2];
+space_top        = 7;
+space_bottom     = 3;
+space_bscrew     = 1;
+
+// Board Screw values
+dia_bscrew       = 3.2;
+loc_bscrews      = [[3.5,3.5],
+                    [dim_board[0]-3.5,3.5],
+                    [dim_board[0]-3.5,dim_board[1]-3.5],
+                    [3.5,dim_board[1]-3.5]];                    
+
+// Case Screw values
+dia_cscrew       = 3;
+dia_chead        = 5.5;
+height_chead     = 2.5;
+                    
+// Case values
+wall_frame       = 1.2;
+rim              = 1;
+mki              = 2;
+                  
+// ports
+cuts             = [[[0,0],[5,3],"front","sqr_indent"],       
+                    [[0,0],[5,3],"back","sqr_indent"],
+                    [[0,0],[5,3],"left","sqr"],
+                    [[0,0],[5,3],"right","sqr"],
+                    [[0,0],[5,3],"top","sqr"],
+                    [[0,0],[5,3],"bottom","sqr_indent"],
+                    ];
+
+case(part=case_part,
+     render_mode=render_mode,
+     
+     wall_frame=wall_frame,
+     rim=rim,
+     mki=mki,
+     port_length=wall_frame+rim,
+          
+     dim_board=dim_board,
+     cuts=cuts,
+     space_top=space_top,
+     space_bottom=space_bottom,
+     space_bscrew=space_bscrew,
+
+     dia_cscrew=dia_cscrew,
+     dia_chead=dia_chead,
+     height_chead=height_chead,
+     
+     dia_bscrew=dia_bscrew,
+     loc_bscrews=loc_bscrews);
+```