Comments

Types

**Multi-line Comments:**

* Start with /* * End with */ * Cannot be nested.

**Single-line Comments:**

* Start with // * End with a newline character. * Can be nested within multi-line comments.

Placement

Comments are allowed anywhere spaces are allowed.

Comments can contain any number of spaces.

Examples

//--- Single-line comment
/*  Multi-
    line    // Nested single-line comment
    comment
*/

Related Topics

[Syntax](/basis/syntax)

[Identifiers](/basis/syntax/identifiers)

[Reserved Words](/basis/syntax/reserved)

Help Files

[English MQL4 Help (CHM)](https://www.mql5.com/files/docs/mql4.chm)

[Russian MQL4 Help (CHM)](https://www.mql5.com/files/docs/mql4_russian.chm)