Arhive.org's snapshot of Wikipedia's source:

https://web.archive.org/web/20131021094116/http://www.lottie...

Relevant fragment:

>The main aspect of the GUI was to use graphic metaphors for objects like computer programs and documents. Another man working with the computer scientists was a Graphic Designer called Norman Cox. He was responsible for designing a series of icons to make basic operations of the computer visible as actual objects. Merzouga Wilberts also came up with the concept of WIMP (windows, icons, menus and pointers). These interface objects create a feeling of familiarity and consistency for the user enabling a particular message to be conveyed. However, the technology was not yet available to develop the ‘Xerox Star’ and the management at Xerox was not willing to invest any funds into the project as they did not see it as a marketable product. This was a big mistake!

So looks like Charlotte Booth in that relatively modern article meant concept of the WIMP, not terminology.