Related Clues:

• Mention as an afterthought
• Calculate sums
• Do some simple calculating
• Mend a skirt, perhaps
• Tailor again, as a skirt
• Do a summer's work?
• Compute, sometimes
• Change the length of
• Write, as a P.S.
• Offer as a bonus
• Make a contribution
• Write in a postscript, e.g.
• Use a '+'
• Calculate the total
• Cookbook directive