In the descriptions of /enemysign and Placeholders, the word "cross" is used to represent the ＋ symbol.
/enemysign
>>Sign Types:
cross
Placeholders
<cross>
Displays target marked with a cross's name.
On the other hand, in the Signs Main Command ("Plus") and in the General Action "Plus Target", the word "plus" is used for the same symbol. It is not incorrect, as both "cross" and "plus" are accepted as valid subcommands; however, I believe the terminology should be unified to avoid confusion. For reference, in the Japanese version, "plus" is consistently used in all cases, while in the French version, "cross" is consistently used.