Zefram wrote:
If possible, amend rule 1871 by replacing the text "if e was turned when it was called" with "if e is turned". Otherwise, amend rule 1871 by replacing the text "if e was not standing when it was called" with "if e is not standing".
This would be clearer if worded as "If R1871 contains <oldtext>, then amend it by replacing that text with <newtext>."
