In the link file command descriptions, square brackets, "[]", indicate optional parameters that can be omitted, braces, "{}", indicate parameters of which at least one must be selected, "{}..." indicates parameters that can be repeated, and vertical bars, "|", indicate alternative parameters of which no more than one can be selected.
Assembler link file command usually have the extension .LIN and can have optional slashes put in front of the commands, for example:
// include asm1.obj // include cob1,type=CBL
Comments may be placed in the file by preceding them, either with a semicolon as follows:
// include asm1.obj ; main assembler entry point comment
Or by placing an asterick character in column one as follows:
*this is the main assembler entry point // include asm1.obj
The link file commands can start anywhere after the first column.