NAME
    OpenResource -- gain access to a resource

SYNOPSIS
    resource = OpenResource(resName)
    D0                      A1

    APTR OpenResource(STRPTR);

FUNCTION
    This function returns a pointer to a resource that was previously
    installed into the system.

    There is no CloseResource() function.

INPUTS
   resName - the name of the resource requested.

RESULTS
    resource - if successful, a resource pointer, else NULL