You may consult the manual information interactively from anywhere in the data base. The manual files are located in the directory bda/manuel. They all have the suffix ".mnl". After displaying the manual information, the shell script asks you if you want to see the source code of the command or function. These description are in French.
Interactive form for the command mnl:
> mnl ubv
Do you want a listing of the code (y/n) ? y