Coded Message

There are those who write code
To make instructions clear.
Others’ messages are slowed,
Crypted in wording queer.

I have written in both
With varying success.
Computers fine in troth,
But people in distress.

Knowing what to explain
May help my clarity
And tell my roving brain,
“Combat perversity.”

But rarely I set out
When scribbling in verse
Knowing what I will spout –
By rule, rhyme drives the hearse.