Do we need a comma after "etc.," "and so on," and "and so forth" below? I say no to all. I think that the commas can be omitted in all. Do you concur? (1) Proper technique (with attention paid to posture, wrist position, distance from the keyboard, etc., in the later performances) is not in and of itself sufficient to explain Rubinstein’s endurance. (2) Cats, dogs, parrots, etc., in transit must be confined to cages. (3) Pencils, colored paper, protractors, etc., are needed for the project. (4) The carpenter’s saw, hammer, level, and so on, were found in the attic. (My druthers: The carpenter’s saw, hammer, level and so on were found in the attic. Agreed?) (5) The philosopher’s population studies, classic textbooks, stray notes, and so forth, were found in the attic. (6) Mike Smith, Joe Durning, et al., will be at the meeting. (I say that the comma should be removed before and after 'et al.' here....Do you concur?) (7) Mike Smith et al., will be at the meeting. (Omit comma after et al.?) Thank you.