Primary and secondary input

A distinction is made between primary and secondary input, depending on the time the input takes place.

The primary input is specified in the command or macro with which DBL is called. The user specifies the module and, optionally, the input source in the command or macro. The module may be an object module or an LLM.

The secondary input is performed in the following cases:

• if DBL needs to include additional modules from an input source because of unresolved external references and V-type constants (autolink function, see "Resolving external references")

• if object modules contain INCLUDE statements that request additional object modules from an input source. This applies only to object modules. LLMs do not contain INCLUDE statements.