When you enable the debugger, the assembler automatically generates some debug information for your project. However, you can use these directives in the debug section to provide additional information to the debugger:
file
Specifies the source-code file; enables correlation of generated assembly code and source
code.
function
Tells the assembler to generate debugging data for the specified subroutine.
line
Specifies the absolute line number (of the current source file) for which the assembler
generates subsequent code or data.