comments - Jeybla/rathena GitHub Wiki
A comment is something that is not read by the compiler or interpreter.
Single line comments begin with double slash // and continue to the end of line.
// This is a comment that takes up the whole line.
set .@amount, 100; // comments can go after script commands too
Multi-line comments begin with /* and end with */
/* My Kafra
* version: 1.0
* by: Your Name
*/
rAthena is written in C, so single line (//) or multi line (/* */) comments can be used.