The read_ini function retrieves a string from the specified 
section in an initialization(ini) file.

Input:
SECTION :
name of the section containing the key name.
The name of the section is case-independent

KEY :
name of the key whose associated string is to be retrieved
The name of the section is case-independent

FILE :
name of the initialization file. If this parameter does 
not contain a full path to the file, the system searches 
for the file in the Windows directory.

Output:
VALUE :
Contains found section/key value
if "<not found>" is returns key, section, and/or file was not
found/missing.