extension requirements

commit 1145d27bdb71ca55c98b944ef5b4c3cd9c98ed6c
Author: Julie Zelenski <[email protected]>
Date:   Wed Feb 12 21:23:08 2025 -0800

    extension requirements

Author: zelenski

assignments/assign5/README.md

@@ -601,7 +601,7 @@ cs107e rocks
 
 - __Bonus command/feature__
 
-    The final extension task is to implement a bonus command/feature of your own choosing that customizes the shell to your liking.  Perhaps you like to be able to `tab` to auto-complete command names or use environment variables to set and recall values. Our reference shell includes the extra commands `gpio` (control gpio pins), `calc` (simple calculator), `hexdump` (extended peek), `pinout` (display header pinout), `backtrace` (current backtrace), `nm` (print symbol table), and `disassemble` (using the assign3 disassemble extension). We do not have one specific bonus command for everyone to implement; we welcome you to add anything that you would learn something valuable from implementing and would appreciate having in your shell.
+    The final extension task is to implement one or more bonus commands/features of your own choosing that customizes the shell to your liking.  Perhaps you like to be able to `tab` to auto-complete command names or use environment variables to set and recall values. Our reference shell includes the extra commands `gpio` (control gpio pins), `calc` (simple calculator), `hexdump` (extended peek), `pinout` (display header pinout), `backtrace` (current backtrace), `nm` (print symbol table), and `disassemble` (using the assign3 disassemble extension). We do not have one specific bonus command for everyone to implement; we welcome you to add anything that you would learn something valuable from implementing and would appreciate having in your shell.
 
 To submit the completed extension for grading, tag with `assign5-extension`. In your `assign5/README.md`, tells us about all of the editing, history, and bonus features supported by your fancy extended shell so we'll know how to try it out when grading.