What is the meaning of "coarse hand"?

Recently I came across the expression "coarse hand" and couldn't find its meaning. For example,

— Can you read?
— No, only coarse hand.

What does this mean?

Edit

This is a term Twain used in The Adventures of Huckleberry Finn

I was a good deal astonished, but when I got my breath I asked her what the paper was about, and she asked me if I had read it, and I said no, and she asked me if I could read writing, and I told her "no, only coarse-hand," and then she said the paper warn't anything but a book-mark to keep her place, and I might go and play now.

The phrase was completely unknown to me, as I suspect it is to anybody who has not encountered it in The Adventures of Huckleberry Finn.

Googling for "coarse-hand" gives this as the first result: "Coarse hand means printing as opposed to cursive writing, in which the letters are connected."

This explanation seems to make sense, but I have not found it in any dictionary; so this was a reasonable question but only when you gave us the source.

Perhaps OP should switch to reading the Barnes and Noble Classic Edition, which has an asterisk after the word "hand", and a footnote at the bottom of the page reading...

*Hand-printing in block letters, as opposed to cursive writing.