It should come as no surprise that writers take an interest in punctuation. I have been told that the dying words of one famous 20th-century writer were, "I should have used fewer semicolons" - and although I have spent months fruitlessly trying to track down the chap responsible, I believe it none the less. If it turns out that no one actually did say this on their deathbed, I shall certainly save it up for my own.

One of the things that all authors of fiction must learn to judge is whether - and in what detail - to describe the face of a character.

Truly good manners are invisible: they ease the way for others, without drawing attention to themselves. It is no accident that the word "punctilious" ("attentive to formality or etiquette") comes from the same original root as punctuation.

I mean, full stops are quite important, aren't they? Yet by contrast to the versatile apostrophe, they are stolid little chaps, to say the least. In fact one might dare to say that while the full stop is the lumpen male of the punctuation world (do one job at a time; do it well; forget about it instantly), the apostrophe is the frantically multi-tasking female, dotting hither and yon, and succumbing to burn-out from all the thankless effort.

A Panda walks into a cafe. He orders a sandwich, eats it, then draws a gun and fires two shots into the air. "Why?" asks the confused waiter, as the panda makes toward the exit. The panda produces a badly punctuated wildlife annual and tosses it over his shoulder. "I'm a Panda," he says, at the door. "Look it up." The waiter turns to the relevant entry, and, sure enough, finds an explanation. Panda. Large black and white bear-like mammal, native to China. Eats, shoots and leaves.

It used to be just CIA agents with ear-pieces who walked round with preoccupied, faraway expressions, and consequently regarded all the little people as irrelevant scum. Now, understandably, it's nearly everybody.

In the family of punctuation, where the full stop is daddy and the comma is mummy, and the semicolon quietly practises the piano with crossed hands, the exclamation mark is the big attention-deficit brother who gets overexcited and breaks things and laughs too loudly.