Notice the block [anyVar] is used to reference variables where the configuration block should be applied. This avoids raw strings for variable names and keeps these configs friendly to development tools:
Projects like Earthly
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You’ll get up to 40 minutes of run time, with two power modes: a standard mode for general cleaning and a Max mode for more intensive spots. It's lightweight and easy to manoeuvre, and it also converts into a handheld vacuum for cars, stairs, and upholstery.
Source: Computational Materials Science, Volume 266