There seems to be a problem with text lines ending in a backslash ("\"). This mainly affects AsciiArt embedded in the page. When the page is saved, the backslash is removed and the following line is appended.
WorkAround: Append a space after the backslash (but SyntacticallySignificantWhitespaceConsideredHarmful).
This was quite a pain on SnuspLanguage. I imagine it would make pasting CeeLanguage multiline macro code painful as well.