pszPathOrName (PSZ) - input
If the Path Source bit of flag is 0, pszPathOrName is the search path that may be anywhere in the caller's address space.
If the Path Source bit of flag is 1, pszPathOrName is the name of an environment variable that contains the search path.
A search path consists of a sequence of paths separated by a semicolon ( ; ). It is a single ASCIIZ string. The directories are searched in the order they appear in the path. Paths that contain semicolons should be quoted. For example:
"c:&this is ; one directory path";thisisanotherEnvironment variable names are simply strings that match name strings in the environment. The equal ( = ) sign is not part of the name.