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% replaces any number of letters (la% - lake, lamp)_ replaces one letter (ca_ - car, cat)

Crossword clues for Levels of command:

ECHELONS: Command levels
MAINMENU: Top-level commands, collectively
MENUBARS: Places to find top-level commands?
ECH: Command level: Abbr.
ECHELON: Command level
ECHELONS: Levels of command
ECHELON: Level of command