FLUID: Documentation

4 files changed, 64 insertions, 6 deletions

diff --git a/fluid/custom_widgets.cxx b/fluid/custom_widgets.cxx
index e254f19d4..99cfbbbdf 100644
--- a/fluid/custom_widgets.cxx
+++ b/fluid/custom_widgets.cxx
@@ -157,7 +157,7 @@ void Fluid_Coord_Input::callback_handler(void *v) {
 }
 
 /**
- Get the value of a variable.
+ \brief Get the value of a variable.
  Collects all consecutive ASCII letters into a variable name, scans the
  Variable list for that name, and then calls the corresponding callback from
  the Variable array.
diff --git a/fluid/documentation/src-dev/fluid-128.png b/fluid/documentation/src-dev/fluid-128.png
new file mode 100644
index 000000000..cf9cf406e
--- /dev/null
+++ b/fluid/documentation/src-dev/fluid-128.png
diff --git a/fluid/documentation/src-dev/page_introduction.dox b/fluid/documentation/src-dev/page_introduction.dox
index 417f9e5db..1db902d44 100644
--- a/fluid/documentation/src-dev/page_introduction.dox
+++ b/fluid/documentation/src-dev/page_introduction.dox
@@ -4,6 +4,64 @@
 
  \tableofcontents
 
- - Provide an introduction that explains the purpose of the user manual and any prerequisites or system requirements.
+ ## Light User Interface Design ##
+
+ FLUID is the Fast Light User Interface Designer that accompanies the fltk
+ user interface library. FLUID relies on panels and dialogs that are generated
+ within FLUID. Consequently, developers are required to consistently assess the
+ user-friendliness and code integrity of the application.
+
+ This document presumes you are familiar with FLUID, have read the most
+ important parts the FLUID User Manual, and have created some user interfaces
+ in FLUID already.
+
+ ## History ##
+
+ FLUID is an application that grew over time with fltk. In its original design,
+ it was meant to allow users to drag and resize a limited number of widgets
+ for small dialog boxes. As the feature set grew over time, new concept and
+ designs were introduced by new authors. In its current state, FLUID's source
+ code is largely undocumented and difficult to read and understand.
+
+ This should not stop you from diving into the code though. The concepts and
+ ideas behind FLUID are great. The software itself is very usable and stable.
+ And while digging through the code, any addition to the documentation is
+ highly appreciated.
+
+ ## Future ##
+
+ As we approach the imminent release of FLTK 1.4.0, FLUID will no longer undergo 
+ significant feature enhancements. Instead, the focus will shift towards
+ documentation improvements, addressing bugs, and enhancing usability for
+ recent FLTK additions such as Fl_Grid and Fl_Flex. Following the release of
+ 1.4.0, FLUID will undergo a comprehensive restructuring and modernization,
+ streamlining maintenance and simplifying the process of integrating
+ support for new widgets.
+
+ ## Quick Glossary ##
+
+ __Project__ : a project is a single design, stored in a project file ending in
+    `.fl`. A project contains a bunch of settings and a tree of Types. One
+    project can contain multiple UI designs.
+
+ __Code File__, __Header File__ : by default, FLUID generates C++ source code
+    that is stored in two files with the same basename as the project. The
+    C++ declarations go into the header file ending in `.h`, and the
+    implementation is stored in the `.cxx` source code file.
+
+ __Strings File__ : FLUID supports internationalization (in short i18n) of all
+    know text elements in a project. The Strings file can be generated as a
+    base for adding new languages. The file extension depend on the chosen
+    i18ns library.
+
+ __Types__ : a type is a node in a tree that manages a widget or a functional
+    node like Class, Function, CodeBlock, etc.
+
+ __Panels__ : in its interactive incarnation, FLUID provides a number of panels
+    (dialog boxes) for editing all aspects of Types.
+
+ ## Basic Structure ##
+
+ ...
 
  */
diff --git a/fluid/fluid.cxx b/fluid/fluid.cxx
index c7cfcac25..26bc5a500 100644
--- a/fluid/fluid.cxx
+++ b/fluid/fluid.cxx
@@ -1022,12 +1022,12 @@ Fl_String open_project_filechooser(const Fl_String &title) {
 
 /**
  Load a project from the give file name and path.
-
+ 
  The project file is inserted at the currently selected type.
-
+ 
  If no filename is given, FLUID will open a file chooser dialog.
-
- \param[in] new_filename path and name of the new project file
+ 
+ \param[in] filename_arg path and name of the new project file
  \return false if the operation failed
  */
 bool merge_project_file(const Fl_String &filename_arg) {