Answer:
visuo-spatial sketchpad
Step-by-step explanation:
Visuospatial sketchpad: This is one of the three components of the Working Memory Model developed by Graham Hitch and Alan Baddeley in 1974.
The Visuospatial sketchpad or VSS is considered to be an important constituent in the use of working memory. This is in charge of processing and storing information present in spatial or visual form, also the speed or location of objects found in space. It requires strategic or top-down processing.
This is the mental facility that allows a virtual environment for calculation, optical memory recall, and physical stimulation.
Hence, Paul is using the visuospatial sketchpad of his memory.