cell C$7$ to return the text $"$ entered the server room at $"($notice the spaces at the beginning and end of the phrase$)$ from the "Text Stamp Phrase" in cell C$2.$

a$.$ Use a reference to the location of the $"$#$"$ symbol in cell C$4$ as the "start$\_$num" argument.

b$.$ Since the $"$#$"$ symbol is $1$ character before the text you want to return, you will need to adjust the $"[$start$\_$num$]"$ argument by adding $1$ to the reference to cell $($C$4).$

c$.$ Use the difference between the location of the $"$#$"$ symbol $($cell C$4)$ and the characters $"H{H}^{\text{'}\text{'}}($cell C$6)$ as the "num$\_$chars" argument.