Documentation black/white reversal

[kurahaupo]

The documentation for "Singles" says that all white squares must be connected and all black squares must be disconnected.

However when using a dark (nighttime) theme, the documentation becomes backwards: the black squares (containing digits) must be connected, while the white (empty) squares must be disconnected.

I suggest that the documentation be updated to refer to "blank squares" and "squares with digits".

Alternatively, the game could be updated to place an X or • rather than leave a blank, then the documentation could simply refer to X or dot, vs digit.