_ (underscore)
Valid Character in Variable Names
Example:
put 98 into base_temperature
Underscores () may be used in numeric literals to separate groups of digits (Added to SenseTalk in 1.66) {#underscores--may-be-used-in-numeric-literals-to-separate-groups-of-digits-added-to-sensetalk-in-166}
Example:
put $10_000_000 into annualSpendingCap