Sankaku Channel/

ALAKTORN said:
I was trying to copy-paste the DText help page into a wiki, but I didn’t know how to copy the formatting.

Maybe a bit late, but you could insert a zero width space (U+200B) between the brackets. Example:
[b​]strong text[/b]
Makes text bold.
[i​]emphasized text[/i]
Makes text italicized.
[u​]underlined text[/u]
Underlines text.
[s​]stikethrough text[/s]
Strikes through text with a line.