To many investors, however, a voluntary guideline is not enough.

That's more than double the maximum recommended by voluntary federal guidelines.

Under the voluntary guidelines established so far, newspapers would not be obliged to buy it.

The rules would make mandatory most of the practices now set forth in the industry's voluntary guidelines.

The resolution, however, does more than disapprove of these voluntary guidelines for teachers.

The guidelines, voluntary for now, are likely to be adopted by the association's accreditation commission.

The industry has agreed to voluntary guidelines that restrict advertising when at least half of a program's audience is under age.

The second priority was adoption of voluntary voting system guidelines.

They say the voluntary guidelines are routinely ignored on thousands of acres.

The food industry adopted voluntary guidelines to try to fend off legislation.