The first execution of funct will create the initialization file .funct-3.1 in the user's home directory. This file will be used as initialization file in subsequent executions of funct. It may be modified, for example to specify the names of custom command and result directories (see the documentation of interpcom).
It is possible to modify the size of X11 windows : it is defined by the variables x_win and y_win in a section !var of .funct-3.1. The default values are 800 and 750 respectively. They can be kept for a screen resolution of 1280x1024 . For 1024x768, 600 and 600 would be more convenient.