Send HotKey Clarification

Dear Community,

Currently i am going through the workflow design and notice that there is one tool being used as per screenshot.


May i know in what circumstances that we can use this function?


This is send hot key activity which we will usually using when we to perform any key strokes
Like click activity is used to replicate mouse clicks, likewise key board press is performed with send hot key activity
Here we are trying to use ctrl+a which is like selecting a region

Cheers @SH_94