• dlfltxbcodetips: various macros helpful in typesetting mathematics;
• dlfltxbmarkup: provides macros used throughout, for registering macro names, packages etc. in the text, in the margin and in the index, all by using categorised keys (note, a configuration file may be used; a sample is included in the distribution);
• dlfltxbtocconfig: macros for the two tables of contents that the book has;
• dlfltxbmisc: various macros for typesetting LaTeX arguments, and the macro used in the bibliography that can wrap a URL up into a BibTeX entry.

The author is Lars Madsen. The package is Copyright © 2008 Lars Madsen.