Perfect, in rocketry

• Just great
• "Come and play, everything's ___" ("Sesame Street" theme lyric): Hyph
• "Thumbs up" response
• Unreservedly approvable
• Intensive affirmative
• "Fine with me!"
• Proceeding normally
• Astronaut's "thumbs up": Hyph

Wiktionary Word definitions in Wiktionary
a. (alternative spelling of A-okay English)