Quote Originally Posted by audinue View Post
Is it writeable or writable?

Is it closeable or closable?
Don't worry, either one is close enough (but it's writeable and closable). The spelling here has to do with pronunciation and vowel sounds/rules.

Quote Originally Posted by tabstop View Post
"Next" is an adverb.
"next" is usually an adjective (something that applies a characteristic to a noun) and since "move next" here probably means move the next something, it's adjectival.

Adverbial use of next would be like in chess: "You move next." Sometimes next is part of a prepostion: "next to"

The verb form of "iterator" is iterate.