diff --git a/readme.md b/readme.md
index 8f449eb..3c02095 100644
--- a/readme.md
+++ b/readme.md
@@ -6,30 +6,16 @@
 
 ## Run
 
-### Assemble
+### Assembler
 
-Hex output:  
-```./run-assembler run source_code.asm```
+```./assembler.js source_code.asm [output.txt]```
 
-Binary output:  
-```./run-assembler runbin source_code.asm```
+By default, the output is written to `out.txt`. It is saved as a string of space-separated decimal numbers.
 
-Verbose debugging output (hex):  
-```./run-assembler debug source_code.asm```
 
-### Assemble and run
+### Simulator
 
-With animated display of screen memory:  
-```./run-cpu run source_code.asm```
-
-With verbose debugging output:  
-```./run-cpu debug source_code.asm```
-
-With single stepping + pretty-printed display:  
-```./run-cpu step source_code.asm```
-
-With single stepping + verbose debugging output:  
-```./run-cpu stepdebug source_code.asm```
+```./cardiograph.js < machine_code.txt```
 
 
 ## Registers and Flags