Foot-Fault awareness
In the strongest statement yet on the chronic problem of foot-faulting, the Board of Directors approved a proposal by League Coordinating Director William Jones, that, for one year, leagues and others in casual play may call a “let” every time the server violated the foot-fault rule rather than taking the loss of point.
The purpose of the suggestion was that a “kinder and gentler” approach to the violation was needed and would increase the awareness of the problem for the player involved.
Source: Platform Tennis News, Summer 1996