keyword (x86 systems only) The Linker accepts the following keywords to include traceback information in the image file. Keyword Description LINE_NUMBERS Directs the linker to include minimum information for the TRACE facility to print module names and line numbers. Image files created with this keyword can be significant smaller than others. SYMBOLS (default) Directs the linker to include sufficient information for the TRACE facility to print module names, line numbers and symbolized routine names.