After 15 betas, I'm happy enough with the current state of Declt to finally make a 1.0 release.
A lot of things have changed since the previous version, sometimes in a backward-incompatible way. Many more items are documented (including, as you have recently seen, method combinations). In addition to the reference manual, generated by Declt itself, there is now a real user manual.
Declt is still SBCL-only, requires ASDF 3 and Texinfo 4 but generates code that is compatible with Texinfo 5. Also, beware, I've deleted the old repository and moved the project to GitHub. Below is a more precise description of what Declt currently does.
Declt (pronounce "dec'let") is a reference manual generator for
Common Lisp libraries. It works by loading an ASDF system and introspecting
its contents. The generated documentation contains the description for
the system itself and its components (modules and files), the packages
defined in that system and the definitions found in those packages.
Exported and internal definitions are listed separately. This allows the
reader to have a quick view on the library's public API. Within each
section, definitions are sorted lexicographically.
In addition to ASDF system components and packages, Declt documents
the following definitions: constants, special variables, symbol macros,
macros, setf expanders, compiler macros, functions (including
setf ones), generic functions and methods (including setf ones),
method combinations, conditions, structures, classes and types.
The generated documentation includes every possible bit of information
that introspecting can provide: documentation strings, lambda lists
(including qualifiers and specializers where appropriate), slots
(including type, allocation and initialization arguments), definition
source file etc.
Every documented item provides a full set of cross-references to related
items: ASDF component dependencies, parents and children, classes direct
methods, super and subclasses, slot readers and writers, setf
expanders access and update functions etc.
Finally, Declt produces exhaustive and multiple-entry indexes for
every documented item.
Reference manuals are generated in Texinfo format (compatible, but not
requiring Texinfo 5). From there it is possible to produce readable /
printable output in info, HTML, PDF, DVI and PostScript with tools such
as makeinfo, texi2dvi or texi2pdf.
The Declt reference manual is the primary example of documentation generated by Declt itself.