Experimentation with M and H can be used to get other types of effect such as adding a margin also at the bottom of the window. It's better to just read the code. The given build file may have to be edited to insert correct library and include file path names. We've tested the program with limited amount of X servers. Larger screens may benefit from setting these parameters higher.
Smaller screens require changing the parameters so that all of the window becomes visible.
The size of the read, manipulated, and stored spreadsheets is defined by a compile time parameter. However, changing this parameter is not entirely trivial. If this happens, you may move the offending character to a new name by exchanging it on the command line and in the program with another character.