I can't find a proper source for this but many materials say that ANSI
rows and columns start at 1 not 0.
https://www2.math.upenn.edu/~kazdan/210/computer/ansi.html is as good as
I can get:
```
<row> is a number from 1 through 25 that specifies the row to which the cursor is to be moved.
<col> is a number from 1 through 80 that specifies the column to which the cursor is to be moved.
```
0 does work in Windows terminal and Linux terminals, but we might as
well be correct and it's one less thing to reason about when auditing
this code.
From what I read, some terminals correct 0 back to 1 and some treat 0 as
a missing argument, which also defaults to 1.
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