From the article, I understood as follows
* Make test strips of film base + fog and find the minimum time for maximum black. For 35mm with Grade 3 filter.
* Make contact sheet with minimum time.
* Shadows will tell how much correction is required in the exposure.
* Highlights will teach about the development times.
** I conclude that overexposed and under developed will print with good tonal seperation.
Do I miss anything...