[M/S -3] does not contain any [yellow-coded-input-cells] and designed only for viewing information by utilizing the scroll bars.
The best first step to quickly gain a basic understanding and appreciation for the business purpose of [M/S -3] is to review the  images below. The first image populated with the [simulated-business-data] contained in the Practice Software.
The second is an image of how [M/S -3] appears before populating any [data] in the software. Take note of the protected cell coordinates designed to display calculations or information appear as blank cells. Displaying cell coordinates not requiring a calculation as a blank cell is a principle design structure throughout the software to by design limit the [number of numbers] displayed in each respective software segment. For example; cell coordinates designed to display actual vs. forecast better or worse calculations will appear as blank cells when the software does not contain a future forecast. Left click on the image above to open an enlarged image in a new tab.
This informative and unique software segment presents  screen images of “Key” financial statistics providing detailed support to assist with analyzing the current month and year-to-date financial results against prior historical periods. The Page Up and Page Down keys are used to scrolling to the next preset screen. Each scrolling screen image provides unique, informative revenue and expense account details allowing for a quick understanding of the financial drivers each month-end that affected the profitability of the business as well as assisting spotting unusual items that may require further review.