diff --git a/CLAUDE.md b/CLAUDE.md
index 56a26d3..9526fdc 100644
--- a/CLAUDE.md
+++ b/CLAUDE.md
@@ -186,7 +186,7 @@ Individual scope informations
 
    =================================================================
 
-   The extent of the selection of the scopes by the user, there sill be 
+   To control the extent of the selection of the scopes by the user, there sill be 
    a selection of what scopes are to be avaiable to the museum visitor. This
    will enable the museum to select what scopes will be available and what scopes
    will not be available at all. A script that will invoke the radar simulator
@@ -502,6 +502,28 @@ Individual scope informations
    4. Long Term Amber -  10 seconds duration after Short Term; Amber hex #FFA040
    5. Expiration - 12 seconds duration after Long Term Amber; very dark hex #050700
 
+   =========================================================================
+
+   Important Nuance For PPI Scope.
+
+   The radio frequency beam from the antenna has a finite width. It's not just a pencil thin
+   beam.
+
+   So what that means is the if there is any intersection between the target (whose dimentions
+   are passed to the shaders) and any part of the beam, including the very edges; you will get
+   an echo. The echo will be the weakest when the edge of the beam intersects with the edge of
+   the target that is closest to the beam. The strength is greatest when the axis of the radio
+   frequency beam is center to the center of the target as it appears in the direction of the
+   radar. This, of course, is affected by the heading of the target (the direction the target
+   is movine in relation to the position of the radar; if the target is heading to the radar, the
+   profile as see to the radar would be the smallest). Then as the radio frequency bearm moves
+   past the target, the intensity of the return signal would be weaker and weaker until the beam
+   completely passes the target and no more energy is returned. 
+
+   So, the target would appear as a curved line that is perpendicular to the angle of the radio
+   frequency beam. The ends of the line would be the dimmest in intensity (weaker) and the center
+   of the target would be the brightest.
+
    Graticules - These are plastic overlays over the face of the scope. They are
    for the purposes of showing the bearing. They are calibrated in degrees; short line (1/8 inch)
    each degree; medium line (1/4 inch) for every 5 degrees; and a longer line (1/2 inch) for every
@@ -509,6 +531,8 @@ Individual scope informations
 
    Notes that these graticule lines are lit by a #47 incandescent bulb #FFB347.
 
+   =======================================================================
+