doc: dev: Complete Model section.

doc/dev/documentation.org

@@ -137,7 +137,7 @@ in {{{file(src/Solver)}}} (see section [[Solver]]).
 [fn:qt-mv] The Qt Model/View documentation web page:
 https://doc.qt.io/qt-5/model-view-programming.html
 
-** TODO Model
+** Model
 
 The model is a set of Python classes. In Pamhyr2, this classes must
 respect some constraint. Each model class must inherits
@@ -258,7 +258,7 @@ other components are linked to one of these basic components.
   }
 #+end_src
 
-*** TODO SQL
+*** SQL
 
 The model must be export to a database file to create a study save
 file. This file use SQLite3[fn:sqlite] format and the extention
@@ -403,8 +403,22 @@ of Bar (Listing [[sql-bar]] and [[sql-foo]]).
 [fn:sqlite] The SQLite web site: https://www.sqlite.org/index.html
 (last access 2023-09-20)
 
-*** TODO List class
-*** TODO Dict class
+*** List class
+
+A abstract class PamhyrModelList is available and provide some of
+basic methods for object list in Model. This abstract class implement
+some classic action in View like: insert new object, delete object,
+sort, move object up, move object down, and so on. An variant exists
+for multiple list with same type of object, each sublist is called
+tab, because in View, this kind of list si prensented in different
+table PamhyrModelListWithTab.
+
+*** Dict class
+
+A abstract class PamhyrModelDict is available and provide some of
+basic methods for object dictionary in Model. This class is like
+PamhyrModelList but use a dictionary instead of list.
+
 ** TODO View
 *** TODO UI file
 *** TODO Translate