The LAYER Statement

LAYER,<lay_no>;

<lay_no> is the layer number (> 0) and must be given within ' ' if it is addressed with an alias name. If <lay_no> is a true number or a variable, it shall not be given within ' '. If <lay_no> refers to a layer class, it must be preceded by # and directly followed by the class number or the class name. In this case, <lay_no> shall be given within ' '.

The maximum length of <lay_no> as an alias is 26 characters and as a variable 32 characters.