A small courtesy, but one that will set you apart in business and life…
When pointing out a word, sentence, section of legal document that needs attention/signing, etc. to a person of relevance (i.e. client, potential client, colleague, etc) use a pen to point to it. Even if you have perfectly manicured nails and your hands are immaculate, you never know. You could offend someone with your choice of nail color or there might be a stray hangnail, or …
It’s more professional and pleasing to focus on a pen!