You may input any text to generate your own tower. For example, π, root of 2, and so on. Of course, you may write a love letter and generate a tower for your lover. That might be a really special gift. :)

The number of letters determines the height of the tower. The more you input, the higher it is.

If you want to print it easily, set the `inner_wall` parameter to `"YES"`. It will add an inner wall with the thickness of the half `thickness` value. When setting `inner_wall` to `"NO"`, it's better to use numbers or uppercase letters.

Just leave the `bottom_symbol` empty if you don't need the bottom symbol.

Leave several blanks if you want all characters to be shown over the bottom.

Using non English characters needs a correct font. If you want to do that, download the .scad source file and use OpenSCAD on your computer. You have to modify the source code of the `tower_of_characters` module according to the font you use. You may take a look at the `tower_of_chinese_characters` module for reference.

Find things about PI.