If the question is good, but general enough to be off topic here, don't:

• Just close it, when it could be migrated to another site where it is on topic.
• Recommend asking on another site, unless closed, because cross-posting is not permitted.

Instead, do:

• Flag for migration, in addition or instead of closing.
• If you recommend another site, tell the user to delete the question here first.

If the question is good, but general enough to be off topic here, don't:

• Just close it, when it could be migrated to another site where it is on topic.
• Recommend asking on another site, unless closed, because cross-posting is not permitted.

Instead, do:

• Flag for migration, in addition or instead of closing.
• If you recommend another site, tell the user to delete the question here first.