Target words are listed in content-script.js in the following line
const targetWords = ['must', 'slashdot'];
Make sure the Chrome extension has been installed and pinned.
Click on the W in the upper right corner of your browser (circled in red in the screenshot below)
Select Count and highlight target words via content-script.js
The pop up will show the word counts in the pop up window. After clicking OK the target words will be highlighted in yellow.
Select Copy a query for ChatGPT into the clipboard using Inject function in popup.js
The pop up will copy a query for ChatGPT based on the article. You will need to manually paste the query into ChatGPT as the OpenAI API is behind a pay wall.