diff --git a/CLAUDE.md b/CLAUDE.md
index 8e2723b..242169e 100644
--- a/CLAUDE.md
+++ b/CLAUDE.md
@@ -56,6 +56,19 @@ for the a scope. The ppi scope
 will be on the right side of the screen and the a scope will be on the left
 hand side of the screen. 
 
+Suggest  one window with viewports. Lets have window the entire screen. For develpment
+I would  need some sort of escape the esscape the full screen and go back to the
+desktop.
+
+Suggest that the radar itself is at the location of the Community Boating
+Center dock in Bellingham, Washington, That should be 0,0 in local cartesian
+coordinates or 0 in range for vectoring. North on radar needs to be north in
+reality. 
+
+GPS for tagets should be converted to local cartesian reference to this
+location. I don't know if I have to be concerned with vector data. Please
+comment.
+
 Notes for controls the user can play with
 
 Here are the controls that I am proposing
@@ -159,7 +172,11 @@ The PPI display will need shaders for the following:
 4. facility to include shore lines. This will change with range settings. If possible, can
    we include docks and tall buildings? Immediate is blue white same as targets.
 
-5. Persistance (green yellow) for targets, clutter, and shore lines.
+5. Persistance (green yellow) for targets, clutter, and shore lines. Persistance should
+   be ping pong. Lets suggest for persistance to be about 3 seconds.
+
+6. The pulse repitition time should be the same as a multiple of the screen update rate
+   so that we would have no aliasing. 
 
 Communication:
 
@@ -174,11 +191,16 @@ Each Raspberry Pi will act as a server fielding requests from this program.
 Lets try to have each raspberry pi as a separate instantiation of a class
 called raspberry pi. Those classes will use a common data structure:
 
-1. float longitude
-2. float latitude
-3. char *vessel_name
-4. char *registration
-5. char *vessel_size
+1. double longitude
+2. double latitude
+3. std::string *vessel_name
+4. std::string *registration
+5. float *vessel_size
+6. float course
+7. float speed
+8. time_t timestame
+9. float altitude (0 for boats)
+10. Target type
 
 Looking for suggesions
 
@@ -189,6 +211,10 @@ call.
 The Raspberry Pi code will live in a separate git repository with its own CLAUDE.md
 and its own CMakeLists.txt, since it targets a different architecture (ARM) and has
 a different toolchain and dependencies. Do not mix it into this repository hierarchy.
+The code will work on a blocking basis to block until something becomes available
+
+It should be up to this piece to convert the global latitude and longitude to 
+cartesian coordinates for the display. Unless you suggest otherwise
 
 Right  now, I just want to make sure that the structure is okay and that the CMakeFile.txt
 looks okay. I am  not ready to ask you to create any code