Alice Grove
"Displays a list of common parser commands in a sidebar as a reference for novice players. Includes actions to turn the sidebar off and on. Story author can tailor the command list and the appearance of the sidebar, or just plug and play. For version 6L or 6M of Inform 7."
Simple Spelling by Alice Grove Version 2/160807
"Simple Spelling aims to make stories more screen-reader-friendly by allowing players to request the spelling of any visible thing. This extension adds two actions: 'listing visible items for spelling' and 'spelling the numbered word.'"
Spelling for Screenreaders by Alice Grove Version 1/201208
"This extension is unfinished. It is not recommended for general use."