213: Alignment of this kind already set

The eleven alignment marks of Aneamal can be classified into four different kinds:

1. :.. ::. .:. .:: ..: :.:
2. : : :::
3. :. .:
4. ::

Different kinds of alignment marks can be added to the same block. For example, it is possible for a block to be divided into columns (: :) that are left-aligned (:..). Marks of the same kind are mutually exclusive on the other hand. In your case two alignment marks of the same kind are in the same block. This is invalid.

Solution

Check your choice of alignment marks for the block in question. Do not use two alignment marks of the same kind for a single block. Mind that multiple alignment marks for a single block need to be separated by white space.

If you did not mean to align content and instead wanted to print literal colons/dots at the start of a paragraph, mark these as literal by prepending a backslash. For example: \.:.