Constant EXTERNAL_ARGS_BUFFER_SIZE 

pub const EXTERNAL_ARGS_BUFFER_SIZE: usize = _; // 24usize

Size of the buffer in pointers that is used for ExternalArgs pointers.

This constant is helpful for transaction generation to check whether a created transaction doesn’t exceed this limit.

#[slot] argument using one pointer, #[input] two pointers and #[output] three pointers each.