[Back] [Up] [Next]

## Identifiers

Identifiers include function names, defined variable and function names, and file variable names. They may include alphabetic characters, numeric characters, and underscores in any order. Identifiers should have at least one non-numeric character so that they are not confused with integers, and they should not look identical to floating point numbers such as 1e6.

Examples: density x y z 3d_mesh