diff --git a/issues/issues.md b/issues/issues.md
index 818bfd9..f3d648a 100644
--- a/issues/issues.md
+++ b/issues/issues.md
@@ -2,20 +2,23 @@
 
 ## Open
 
-### #1 - Improve CLI interface
+### #4 - Add single stepping
 
-I'm thinking of an interface like this...
+Q: should this be part of a more complex monitor interface? See note from [2023-08-31](../2023-08-31.md#microprocessor-trainer-style-keypad)
 
-    $ ./cpu.js -mc code.bin  
-    $ ./cpu.js code.asm
-    $ ./cpu.js --debug code.asm
+Or, a simpler option would be to add a command line flag:
 
-Full list of flags I want:
-
-    -d --debug
     -s --singlestep
-    -p --prettydisplay
-    -mc --machinecode
+
+(Adapted from [#1](#1---improve-cli-interface))
+
+### #3 - Add plain-text display output
+
+With a command line option on `cardiograph.js`:
+
+    -p, --prettydisplay
+
+(Adapted from [#1](#1---improve-cli-interface))
 
 ### #2 - Startup: Execute `JMP $FF`
 
@@ -43,4 +46,19 @@ More step-by-step:
   - Load ROM data into memory at CPU startup (`startCPU(RAM, ROM)`)
 
 
-## Closed
\ No newline at end of file
+## Closed
+
+### #1 - Improve CLI interface
+
+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
\ No newline at end of file
diff --git a/issues/todo.md b/issues/todo.md
index f69af32..66ba41b 100644
--- a/issues/todo.md
+++ b/issues/todo.md
@@ -4,52 +4,26 @@ This is a quick todo list.
 
 For extended commentary, see [issues](issues.md).
 
-## Open
+## Todo
 
-### Todo
-
-- Finish WIP on run-cli arg parsing
-- Pass CYCLE_COUNT as a cli arg
-
-- (cpu) !! Fix overflow flag
+- Add support for single stepping (cf. [#4](issues.md#4---add-single-stepping))
+- Re-build support for plain-text output (cf. [#3](issues.md#3---add-plain-text-display-output))
+- Pass `defaultCycleLimit` setting as a cli arg
 - Add a flag for bank-switching to the ~zero-page
-- 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
+## Features
 
-- (cpu) allow arrow keys, too
 - [fix] (cpu) Execute `JMP $FF` on startup / Implement ROM — see [#2](issues.md#2---startup-execute-jmp-ff)
 - (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
+- (cpu) Consider adding a VIP-style keypad-based machine code monitor 
 - [Extended system (secret bonus operations)](../notes/2023-08-07.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
+...
 
-### Testing
+## Test programs
 
 - Display (hex) numbers
 - Greater than
-- Minimal LOGO-ish interpreter for turtle graphics
-
-
-## Closed
-
-- 2023-08-26 - [fix] (logging) - 'undefined operand' situation is caused by assembling to an initial IP of $1C, which is an odd number
-- (assembler) Pass asm line thru to cpu to print when debugging
-
-
-## Abandoned
-
-- (assembler) Return pure machine code when printing to stdout (and not in debug mode)
\ No newline at end of file
+- Minimal LOGO-ish interpreter for turtle graphics
\ No newline at end of file