diff --git a/notes/issues/todo.md b/notes/issues/todo.md
index e2a0647..3b4079f 100644
--- a/notes/issues/todo.md
+++ b/notes/issues/todo.md
@@ -1,81 +1,44 @@
-# To do
+# To do — Summary
 
-## Next
+This is a quick todo list.
 
-- [ ] **Implement "At start up, `JMP ($FF)`**
+For extended commentary, see [issues](issues.md).
 
-## Research
+## Open
 
-- [ ] Review CHIP-8
+### Todo
+
+- Add a flag for bank-switching to the ~zero-page
+- (assembler) Pass asm line thru to cpu to print when debugging
+- Remove run-scripts and add the ability to run `./cpu.js` and `./assembler.js` directly -- cf. [#1](issues.md#1---improve-cli-interface)
+- [fix] (cpu) Make single-stepping work with simulated keypad
+
+### Features
+
+- [fix] Implement ROM — see [2023-08-24](../2023-08-24--dev-notes.md#cpu-start-up)
+- (assembler) Return pure machine code when printing to stdout (and not in debug mode)
+- (assembler) Validate labels
+- (assembler) Extract debugging to its own module
+- (cpu) Consider adding a VIP-style keypad-based machine code monitor
+- (cpu) Add a mode that prints the display as text, but still animates
+- (cpu) Allow running pre-compiled machine code
+- (cpu) DRY out addition and subtraction
+- [Extended system (secret bonus operations)](2023-08-07--dev-notes.md)
+- (research) Review CHIP-8
     - read about the spec / ISA
     - read these, and add them to the bibliography:
         - Steve Losh: https://stevelosh.com/blog/2016/12/chip8-input/
         - https://tonisagrista.com/blog/2021/chip8-spec/
 
-## Documentation
+### Documentation
 
-- [ ] Improve docs for flags register
+- Improve docs for flags register
 
-## Design
+### Testing
 
-- [ ] Add a flag for bank-switching to the ~zero-page
-- [ ] Consider adding a VIP-style keypad-based machine code monitor
-- [ ] reconsider ISA order in light of supercat comment here
-    - [Why didn't the 6503 have increment/decrement opcodes for A?](https://retrocomputing.stackexchange.com/questions/13023/why-didnt-the-6502-have-increment-decrement-opcodes-for-a)
-
-### Assembler
-
-### For consideration
-
-- [ ] Subroutine stack
-- [ ] [Extended system (secret bonus operations)](2023-08-07--dev-notes.md)
-
-## Programming
-
-- [ ] Write some more complex test programs
-    - [ ] Display (hex) numbers
-    - [ ] Greater than
-    - [ ] Minimal LOGO-ish interpreter for turtle graphics
-
-## Run-scripts
-
-- [ ] Replace with running `./cpu.js` and `./assembler.js` diretly
-
-## Simulator
-
-### Assembler
-
-- [ ] Return pure machine code when printing to stdout (and not in debug mode)
-- [ ] Pass asm line thru to cpu to print when debugging
-    - [x] asm: create a second array that stores every line with code (nor blank or comment only lines) + its line number
-    - [ ] asm: pass that array as a return value
-    - [ ] cpu: accept an optional debugging array, print line # and statement
-- [ ] Validate labels
-
-### CPU
-
-- [ ] Add a mode that prints the display as text, but still animates
-
-- [ ] Make single-stepping work with simulated keypad
-
-- [ ] Allow running pre-compiled machine code
-
-    I'm thinking of an interface like this...
-
-        $ ./cpu.js -mc code.bin  
-        $ ./cpu.js code.asm
-        $ ./cpu.js --debug code.asm
-
-    Full list of flags I want:
-
-        -d --debug
-        -s --singlestep
-        -p --prettydisplay
-        -mc --machinecode
+- Display (hex) numbers
+- Greater than
+- Minimal LOGO-ish interpreter for turtle graphics
 
 
-### Possible under-the-hood improvements
-
-- [ ] Do a proper binary version... (or lose the typed arrays?)
-- [ ] Extract debugging to its own module
-- [ ] DRY out addition and subtraction
\ No newline at end of file
+## Closed
\ No newline at end of file