diff --git a/DESIGN.txt b/DESIGN.txt
index d46323f..7b7fb66 100644
--- a/DESIGN.txt
+++ b/DESIGN.txt
@@ -1,2 +1,13 @@
-design documents, yum yum
 This is the design doc for the game
+design documents, yum yum
+  
+structure design ideas:
+  +each structure has one input per item and one output per item (not stored directly, stored by saving 'recipe:<recipe name>')
+  +each structure has a 'sprite' (pointer to an array of ntca's for printing) (stored in the 'sprite:<name>' entry in the json saves    )
+  +each structure has an id (stored in the 'structure:<name>' entry in the json saves)
+  +connections are 'lengthless', only including a maximum throughput, an input, and an output (exactly one of each per connection) branching must be done by dedicated structures (stored as 'connection{throughput:<number>, input:<UID of feeding structure>, output:<UID of fed structure>}')
+
+  
+item design ideas:
+  +item stack sizes are unlimited (as far an uint_N is concerned), but structures may impose their own limits on stack size
+  +stored as 'item:{id:<item name>, count:<count>}'
\ No newline at end of file