|Wed Sep 6 14:04:54 2023 +0200|
|Wed Sep 6 14:04:54 2023 +0200|
diff --git a/commercial/index.md b/commercial/index.md
index bfee122..674e05d 100644
@@ -228,15 +228,21 @@ specific, invalid, HTML content.
### Q: How portable is SWI-Prolog?
SWI-Prolog is written in C, following the C11 standard. It may be
-compiled using gcc or clang. It does not use any assembly code. It
-does use gcc and clang _built-in functions_, notably for lock-free
-thread synchronization using the _atomic_ built-ins and for fast but
-safe arithmetic using the overflow checking arithmetic built-ins.
-It can also be compiled using the Microsoft MSVC but, lacking some
-extensions, this version is considerably slower. It supports both 32
-and 64 bit architectures on a wide range of CPUs. All CPUs supported
+compiled using gcc, clang or Microsoft Visual C++ (MSVC). It does not
+use any assembly code. It does use gcc and clang _built-in
+functions_, notably for lock-free thread synchronization using the
+_atomic_ built-ins and for fast overflow-aware arithmetic. On MSVC it
+uses the _intrinsics_ functions where applicable.
+The build is configured and controlled using
+[CMake](https://cmake.org/). This facilitates automatic configuration
+for a wide range of platforms as well as using multiple build backends
+such as Unix `make`, `ninja` or Microsoft Visual C++ project files.
+CMake also facilitates embedding a SWI-Prolog in larger projects, where
+needed using a project specific configuration.
+SWI-Prolog supports both 32 and 64 bit architectures on a wide range
+of CPUs. All CPUs supported by [Debian
are supported. Low level OS access is provided for POSIX based systems
(Linux, *BSD (including MacOS) and Windows. Finally, there is a
@@ -247,18 +253,33 @@ package](https://www.npmjs.com/package/swipl-wasm).
Practically all features are transparently supported on all supported
platforms. For all platforms SWI-Prolog comes with small extensions
to access functionality that is platform specific and cannot be
-generalized such as accessing the browser DOM from the WASM version.
+generalized. Examples are accessing the Windows registry in the
+Windows port or accessing the browser DOM in the WASM version.
+### Q: What dependencies does SWI-Prolog have?
+The __core__ depends on [zlib](https://zlib.net/) and optionally on
+[GMP](https://gmplib.org/). Without GMP it provides the same
+functionality (unbounded integers, rational numbers and good random
+numbers) based on an included port of
+The __extension packages__ come in three tastes. Part of the packages
+are pure Prolog, part use C11 code without dependencies and notably
+the _interface_ packages such as for ODBC, OpenSSL, Java and Python
+depend on the development environment of these systems. All these
+extensions are _optional_ though.
### Q: Licenses, open source ...
#### Q: What are the license conditions for SWI-Prolog?
-SWI-Prolog is distributed under the permissive BSD-2 license.
-All software that is part of the standard distribution is either
-covered by this license, concerns external code covered by one
-of the other permissive licenses (BSD-3, MIT, Apache-2) or is
-optional. Optional components covered by GNU licenses are
+SWI-Prolog is distributed under the permissive BSD-2 license. All
+software that is part of the standard distribution is either covered
+by this license, concerns external code covered by one of the other
+permissive licenses (BSD-3, MIT, Apache-2) or is optional. Optional
+components covered by GNU licenses are
- The GPL licensed [readline](https://tiswww.case.edu/php/chet/readline/rltop.html)
Command line editor. This interface may be loaded on demand